Question

If a wheel rolls a distance of 215 inches as it turns through an angle of 105 deg , what is the radius of the wheel? Give answer to two decimal places.

Answer 1

117.32

Explanation:

make an equation as we know that : angle/360 x 2 x pi x radius = 215 inches

So we rearrange the equation to find radius:

105 x 2 x pi x r = 77400( which was 360 x 215)

2 x pi x r = 737.14

and so on...

to get

r = 117.32(rounded to 2d.p.)