Question

Find the radius of a circle with circumference of 45.84 meters. Use 3.14

Answer 1

approx. 7.3 m

Explanation:

The formula for the circumference of a circle is s = r·Ф, where r is the radius and Ф is the central angle in radians.

Here C = 45.84 m = 2π·r. Solving for the radius, r, we get:

45.84 m

r = --------------- = 7.299 m, or approx. 7.3 m.

2(3.14)

Answer 2

3.8 meters

Explanation:

In order to find the circumference for a circle, we use the formula π(radius)²

The circumference give is 45.84 and the π given is 3.14

All we have to do is to just substitute them.

45.84 = 3.14(radius)²

45.84 / 3.14 = radius²

14.6 = radius²

radius = √14.6

radius = 3.82 ≅ 3.8