Question

Please answer urgently
how many revolution a wheel of daimetre 40 cm would make in 176 m ​

Answer 1

circumference=2 ×22/7×40/100

88/35m

So, revolutions to cover 176 m=

176×35/88

70 revolutions^.^

Answer 2

Explanation:

distance covered in 1 revolution = 2πr = 2 x (22/7) x 20 = 880/7 cm
required no of revolutions = 17600 x (7/880) = 140

ans 140