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5 votes
5 votes
A circle has a diameter of

16".
What is the approximate
Circumference? What is the approximate area?

User Leonid Volnitsky
by
2.8k points

1 Answer

12 votes
12 votes

Explanation:

to calculate circumference:


2\pi \: r

if the diameter is 16 then the radius would be 8.


2\pi \:r \\ = 2\pi(8) \\ = 16\pi \\ =Rationalize(50.26548245744) \\circumference = 50.27

to calculate the area of a circle:


\pi {r}^(2) \\ = \pi( {8})^(2) \\ = Rationalize(201.06192982975) \\ area = 201.06 \: ^(2)

User Oursgris
by
3.4k points