Question

find the distance covered in 10 rotations by the front wheel of a road roller whose diameter is 4cm

Answer 1

STEP 1: Find distance traveled in 1 rotation:

Circumference = πD

Circumference = π (4) = 4π cm

The circumference is the distance traveled in one rotation:

Distance = 4π cm

----------------------------------------------------------------------------------------------------

STEP 2: Find distance covered in 10 rotations

1 rotation = 4π cm

10 rotation = 4π x 10 = 40π = 125.67 cm (nearest hundredth)

----------------------------------------------------------------------------------------------------

Answer: The distanced covered in 10 rotations is 125.67 cm