Question

1. A wheel has radius 42 cm.
(a) Find the distance covered in 700 revolutions
(b) In how many revolutions will it cover a distance of 3 km 900 m​

Answer 1

Answer:

circumference =2×22/7×42=264cm

a).in 700 revolution =264×700=184800cm=1848m=1.848km

b).revolution=390000cm/264cm=1477.27revolutions