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dybincka [34]
3 years ago
8

The circumference of a circle is 7π m. What is the area, in square meters? Express your answer in terms of π

Mathematics
2 answers:
wariber [46]3 years ago
7 0

Answer:

12.25\pi\,\,m^2

Step-by-step explanation:

Given: Circumference of a circle = 7\pi\,\,m

To find: Area of a circle in terms of \pi

Solution:

Let r denotes radius of a circle.

Circumference of a circle = 2\pi r

7\pi=2\pi r\\7=2r

Divide both side by \pi

3.5\,m=r

Area of a circle = \pi r^2

Put r=3.5\,\,m

=\pi (3.5)^2\\=12.25\pi\,\,m^2

torisob [31]3 years ago
3 0

Answer:

A ≈ 3.9

Step-by-step explanation:

 <u>How to solve</u>

  • Using the formulas

A=πr2

C=2πr

  • Solving for A

A=C2

4π=72

4·π ≈ 3.8993

Therefore, the circle in square meters in the nearest tenths is A ≈ 3.9

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For this case we have:

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