Question

The radius of a circle is 7 millimeters. What is the circle's area?

r=7 mm
Use 3.14 for a.

Answer 1

Answer: 106.76 Millimeters

Explanation:

The radius is 17 millimeters. Replace r by 17 in the formula.

C = 2​r

≈2 x 3.14 x 17

≈106.76

The circumference is about 106.76 millimeters.

Answer 2

153.86

Explanation:

formula - A = π × r2

3.14 x 7^2

= 153.86