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DiKsa [7]
2 years ago
5

The area of a circle is 9π m². What is the circumference, in meters? Express answer in terms of π

Mathematics
1 answer:
ad-work [718]2 years ago
8 0

Answer:

20.25 pi

Step-by-step explanation:

The circumference of a circle is given by

C = 2 * pi *r

9 pi = 2 * pi *r

Divide each side by 2pi

9pi / 2 pi = 2 pi r / 2 pi

4.5 = r

Now we can find area

A = pi r^2

= pi ( 4.5)^2

20.25 pi

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4 0
3 years ago
Car A's fuel efficiency is 34 miles per gallon of gasoline, and car B's fuel efficiency is 23 miles per gallon of gasoline. At t
Verdich [7]

Answer:

22 more gallons.

Step-by-step explanation:

Given:

Car A's fuel efficiency is 34 miles per gallon of gasoline.

Car B's fuel efficiency is 23 miles per gallon of gasoline.

Question asked:

At those rates, how many more gallons of gasoline would car B consume than car A on a 1,564 miles trip?

Solution:

<u>Car A's fuel efficiency is 34 miles per gallon of gasoline.</u>

<u>By unitary method:</u>

Car A can travel 34 miles in = 1 gallon

Car A can travel 1 mile in = \frac{1}{34} \ gallon

Car A can travel 1564 miles in = \frac{1}{34} \times1564=46\ gallons

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<u />

6 0
3 years ago
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natali 33 [55]

Answer:

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Step-by-step explanation:

7 0
2 years ago
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Answer:

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7 0
3 years ago
-2/3m = -12 please explain how to solve.
vichka [17]

Answer:

m = 18

Step-by-step explanation:

-2/3m = -12

multiply both sides of the equation by 3:

-2/3m(3) = -12(3)

simplify:

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divide both sides by -2:

-2m/-2 = -36/-2

simplify:

m = 18

3 0
3 years ago
Read 2 more answers
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