How do you find the circumference and area of a circle with radius of 7 feet?

2 Answers
Mar 18, 2018

The formula for area is pi xx r^2π×r2 and the circumference is 2 xx pi xx r2×π×r

So if r=7r=7, let's find these values:

* * * * * * * * * * * * * * * * * *

Area

pi xx 7^2π×72

pi xx 49π×49

49pi49π feet

* * * * * * * * * * * * * * * * * *
Circumference

2 xx pi xx 72×π×7

14pi14π feet

Mar 18, 2018

Use these formulae

Explanation:

The circumference of a circle is pi dπd

The area of a circle is pi r^2πr2

Remember that the diameter is double the radius