Mathematics High School

The area of a circle

The Area Of A Circle

Answers

Answer 1

Answer:

area of the circle = 36π cm²

But area of a circle = πr²

Which means,

πr² = 36π

r² = 36π/π

r² = 36

r = √36 = 6 cm

Radius = 6 cm

Related Questions

In a geometric sequence, the first term is 3 and the common ratio is 2. What is the sum of the first 9 terms?
a .99
b. 1022
c. 1533
d. 765

Answers

Step-by-step explanation:

99 is the answer........

The sum of the first 9 terms of the given GP series will be 1533 thus option (c ) is correct.

What is geometrical progression series?

A geometric progression is a sequence in which any element after the first is obtained by multiplying the previous element by a constant which is called a common ratio denoted by r.

For example, the sequence 1, 4, 16, 64,… is a geometric sequence with a common ratio of r = 4.

Let's say the first term of the given GP is a and the common ratio is r.

a = 3 and r = 2

The Sum of n term is given as,

S = a([tex]r^{n}[/tex] - 1) / (r - 1)

S₉ = [3(2⁹ - 1)/(2 - 1)]

S₉ = 1533

Hence "The sum of the first 9 terms of the given GP series will be 1533".

For more information about the geometrical progression,

brainly.com/question/4853032

#SPJ2

4
Nora draws a figure on a piece of paper
as shown.
8 cm
7 cm
What is the area of her figure? Use 3.14
for
A 53.12 cm?
© 106.24 cm
B) 78.24 cm?
128.48 cm2
Need answer ASAP

Answers

The answer is 78.24cm^2

Please help

Question 2
If 2x2 + 6x = 36, what are the possible values of x?
A. -12 and 3
B. -6 and 3
C. -3 and 6
D. -3 and 12

Answers

Answer:

B. -6 and 3

Step-by-step explanation:

2x^2+6x-36=0

(x+6)(x-3)=0

Solve x+6=0 x-3=0

HELP FAST

find the value of x.

Answers

Answer:

81=6x+3(vertically opposite angle are equal)

81-3=6x

78=6x

x=13°

hope it helps.

A 30oz bottle of sriracha is on sale
for $2.99. What is the price per
ounce?

Answers

Answer:

Each oz is worth 10 cents

Step-by-step explanation:

2.99/30 = .099 ~ .10

7th grade math help me pleaseeeeeee

Answers

33.20-3.50=29.70

29.70/6=4.95

It would cost Kurt $4.95 for one pair of socks.

Hope this helps, Cute PfP btw

The function f(x) = 300(1 − 0.05)x models a population of sharks after x years. What will the population be in 7 years?

Answers

Answer:

When you round the answer it's 210 because for population you round it

Step-by-step explanation:

Answer:

200 , got it correct on test !

Step-by-step explanation:

zoom
860/483/9988
this is just not part of it⇒ 5+2=7

Answers

Answer:

Ok and the answer is true :)

Step-by-step explanation:

5.
I DON'T
The rate is given as a percent (%). Before using it in the
SUFFER FROM simple interest formula, you must first convert it to a
INSANITY.
I ENJOY
EVERY
MINUTE OF IT
I a) fraction
b) decimal
c) ratio
. d) dollar amount

Answers

The formula for simple interest is (SI)= PxTxR/100
So you need to turn the percentage into a fraction so you have the rate as r/100

A runner ran 20 miles in 150 minutes.
If she runs at the same speed,
a. How long would it take her to run 6 miles? ___minuets

b. How far could she run in 15 minutes?
___miles
C. How fast is she running in miles per hour?
miles per hour___
d. What is her pace in minutes per mile?
minutes per mile___

Answers

Answer:

a) 45 minutes

b) 2 miles

c) 8 miles per hour

d) 7.5 minutes per mile

Step-by-step explanation:

a) (150/20) x 6 = 45 minutes

b) (20/150)(15) = 2 miles

c) (20/150)(60) = 8 miles per hour

d) 150/20 = 7.5 minutes per mile

Answer:

Use ratios and cross multiplication to solve this

20 miles ⇔ 150 minutes

a.

20 miles ⇔ 150 minutes6 miles ⇔ x minutes20x = 150*6x = 900/20x = 45 minutes

b.

6 miles ⇔ 45 minutesx miles ⇔ 15 minutesx = 6*15/45x = 2 miles

c.

2 miles ⇔ 15 minutes x miles ⇔ 1 hour = 60 minx = 2*4 = 8 miles per hour

d.

2 miles ⇔ 15 minutes 1 mile ⇔ x minutesx = 15/2 = 7.5 minutes per mile

a quadrilateral with opposite sides both parallel and congruent.​

Answers

The answer is a parallelogram

Question
Calculate without using a
+3
[tex]( \frac{2}{3} + 3 \frac{3}{4} [/tex]
​

Answers

hope that this helps!

A 17 ft ladder leans against the side of a house. The top of the ladder is 14ft off the ground. Find x, the angle of elevation of the ladder. Round your answer to the nearest tenth of a degree.

Answers

Answer:

.82 or 80 degrees rounded

Step-by-step explanation:

you can use SOH-CAH-TOA meaning sin = opposite/hypotenuse, so 14/17 = .82.

over the past ten years the population in a small city decreased by 12% resulting in a current population of 105,000 people what's the population of the city ten years ago

Answers

Answer:

119,318

Step-by-step explanation:

Gail runs a taxi.
Her running costs are £95 per day.
She charges £1.40 per mile travelled.
On Tuesday she carried passengers for a total of 50 miles.
What was her total loss?

Answers

Answer:

Her total loss was £25

Step-by-step explanation:

Here, we want to get the value of total loss

What we have to do here is to subtract the amount made from the running cost

From the question, we have the amount made as;

£1.40 * 50 = £70

So we have the loss as,

70-95 = -£25

Answer:

34

Step-by-step explanation:

i swear it is 34

If at most 5 students can sit at a table, what is the minimum number of tables needed to seat 33 students

Answers

7 tables minimum in order to seat 33 kids

Answer:

7 kids minimum.

Step-by-step explanation:

33 devided by 5 is 6 remainder 3. You can't have 3 kids not sitting. so you add another table.

What is the value of 1-121?
A. -12
B.
-12
O
C.
12
OD. 0.12
O
E. 12.

Answers

Answer:

-120

Step-by-step explanation:

1-121 =

121 - 1 = 120

It becomes a negative because 1 is less than 121

I need help please and can you also explain how you got the answer
I will give the crown, no trolls, no links please

Answers

Hello! Let’s start with multiplying them so they will have the same base! 2(2/3) = 4/6

Alright, now let’s divide them!

4/6 / 5/6 equals to 4 / 6 x 6 / 5 which is equal to 24 / 30 but I only see 2/3 times 6 / 5 WHICH IS the same thing tho.

A3 Math gr6 20-21 Form O Online 21 of 34Item s Ali writes the expression "half of the sum of $9$ and a number." Write an algebraic expression that is equivalent to Ali's expression. Write a second algebraic expression that is different from, but equivalent to, your first expression.

Answers

Answer: See explanation

Step-by-step explanation:

We are informed that we should write a equation that represents the expression "Ali writes the expression "half of the sum of $9 and a number.".

Let the number be represented by x. The first equation based on the information given will be:

= 1/2(9 + x)

The second equation will be:

= (9 + x)/2

= 4.5 + 0.5x

Which is the answer. A B C D?

Answers

I believe the answer is D

Find RT please and thank you.

Answers

RQ × RP = RS × RT

9 × ( 9 + 13 ) = 11 × RT

9 × 22 = 11 × RT

Divide sides by 11

9 × 22 / 11 = 11 × RT / 11

Simplification

9 × 2 = RT

RT = 18

Answer: RT=18

Step-by-step explanation: I’m going to be using this formula: RQ•RP=RS•RT

9•22=198

ST=7

11•18=198

Therefore RT=18

I need this Asap

the question below​

Answers

Answer:

[tex]5x^{4}[/tex]

Step-by-step explanation:

lmk if you need an explanation  :)

it’s 5x^4 because you simplify the fraction out

A store has a T.V. on sale for 689.99 with a 25% off tag. There is also a storewide savings of an additional 25% off of the sale price.
What is the final price of the T.V.?

Answers

Answer:

i think

it should be the price 2000

please mark me as abrainlist

pls help I only need help with family 1​

Answers

Since the question says “identify anyone” could you possibly put there are no ages of the children that stick out since they are all five years apart

A sapling that started out 13.63 inches tall grew 2.41 inches per year. How tall was the sapling when it was 14 years old?

Answers

Answer:

47.37 Inches

Step-by-step explanation:

We start by assuming that we're at zero years when the tree is at 13.63 inches. We then ignore that height, and look at the rate of growth, which is 2.41 in / year.

The question asks how tall the tree is when it's 14 years old, so we multiply 2.41 inches / year by 14 years to get 33.74 inches.

The final step is to add that 33.74 onto the original 13.63 to get a new total of 47.37 inches when the sapling is 14 years old.

i need help pleaseeee​

Answers

Answer:

line e

Step-by-step explanation:

the y-axis is vertical and tht is the only vertical line on there

Answer:

Line e

Step-by-step explanation:

Line e passes through point h and is parallel to the y axis.

When two lines are parallel, that means that both lines move in the same direction and never meet.

Linear y=mx+b Line
a. y=x b. y= -2/3x -4

Answers

Answer:

Every straight line can be represented by an equation: y = mx + b. ... The equation of any straight line, called a linear equation, can be written as: y = mx + b, where m is the slope of the line and b is the y-intercept. The y-intercept of this line is the value of y at the point where the line crosses the y axis.

Step-by-step explanation:

hope i helped:)

b. y= -2/3x -4

Find the area of this hexagon

Answers

The area is: 584.57 in ²

Please answer ( 8th grade math )

Answers

The answer is C you just add both angles together and subtract the sum by 180 because that’s what triangles equal to. Leaving you with the answer of 78°! hope this helped :)

Willie runs 9 yards every five seconds. How many feet does Willie run in 15 seconds?

Answers

Answer:

81

Step-by-step explanation:

9 Yards = 27 Feet

9 Yards are ran every 5 seconds

9 x 3 = 27

27 Yards will be ran in 15 Seconds

Convert 27 Yards into Feet.

27 Yards = 81 Feet

Answer:

27

Step-by-step explanation:

I did the butterfly method

9/5 × x/15

I got 135 then divide by 5 which gives you 27

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