A circular wheel has a diameter of 42 cm. How far will it roll in 5 revolutions?

Question

asked Nov 21, 2022 84.6k views

2 Answers

Yoel Nisanov · Answer 1 · 2022-11-22T18:30:26+0000

Answer:

659.75 cm

Explanation:

First, find the circumference with the formula C = 2
$\pi$ r

The diameter is 42 cm, so the radius will be 21 cm

Plug in the radius into the equation and solve for C

C = 2
$\pi$ r

C = 2
$\pi$ (21)

C = 131.95

Find how far it will roll by multiplying this by 5

131.95(5)

= 659.75

So, in 5 revolutions, it will roll 659.75 cm