Question

Circle P has a circumference of approximately 75 inches.

What is the approximate length of the radius, r? Use 3.14 for
1. Round to the nearest inch.
0 12 inches
0.24 inches
38 inches
46 inches
​

Answer 1

1) 12in

Step-by-step explanation:

The circumference is 75, so to find the diameter you have to divide 75 by 3.14. You get 24 approximately. Then divide the diameter by 2, so 24/2=12.

Answer 2

The length of the radius is 12 in

Explanation:

To solve this problem we need to use the circumferenc formula of a circle:

c = circumference = 75in

r = radius

π = 3.14

c = 2π * r

we replace with the known values

75in = 2 * 3.14 * r

75in = 6.28 * r

75in / 6.28 = r

11.94in = r

round to the nearest inch

r = 11.94in = 12 in

The length of the radius is 12 in