The radius of a wheel is 21 cm. How many revolutions will it make in travelling 924 m (use π = 22/7 )A7B11C200D700Answer: D. 700 Read Explanation: r= 21 cm Circumference = 2πr! = 2 x 22/7 x 21=132 cm Number of revelutions = 924/132 x 100 = 7 x 100 = 700Read more in App