Question

Nigel installed an over-sized dart board on his basement wall. It has a circumference of 70 inches. What is the radius of the dart board, in inches? What is the diameter of the dart board, in centimetres?

Helpppp!!!!!!

Answer 1

11.15

Explanation:

Formula

C = 2 * pi * r

C is the circumference

pi is 3.14 and is associated with all circles

r is the radius (which you are seeking).

Givens

C = 70 inches

pi = 3.14

r = ?

Solution

C = 2*pi *r Substitute the givens into the formula

70 = 2* 3.14 * r Combine the right

70 = 6.28 * r Divide both sides by 6.28

70/6.28 = 6.28 * r / 6.28

11.15 = r