Question

A wheel makes 25 revolutions to cover a distance of 66 m. Find the diameter of the wheel. ​

Answer 1

Answer
66/25=2.64
2*22/7*r=2.64
2r=2.64*7/22
2r=18.48/22
2r=0.84

Answer 2

The diameter of the wheel is 0.84

Number of revolutions = 25 (Given)

Distance = 66m (Given)

Circumfrence of wheel = D/R

= 66/25

= 2.64

Circumfrence is also equivalent to π, thus -

2πr = 2.64

2 × 22/7 × r = 2.64

2r = 2.64 × 7/22

2r = 18.48/22

2r = 0.84