Question

A wheel goes a distance of 2200 m in 100 revolutions find the area of the wheeel?

Answer 1

100 revolutions – 2200 m

then,

1 revolutions – 2200/100 = 22

so,

perimeter of circle = 22

2πr. = 22

2*22/7*r. = 22

44/7*r. = 22

r. = 7/2

so,

Area of a whell = πr²

= 22/7 * 7/2 * 7/2

= 77/2 = 38.5 m²