Question

16. How many times a wheel of radius 28 cm must rotate to go 352 m? (Take T =

17. The minute hand of a circular clock is 15 cm long. How far does the tip of the minutehand move in 1 hour. (Take it = 3.14)​

Answer 1

Answer:

16. circumference of wheel =2πr=2*22/7*28=176cm

for 176 cm - 1 round

for 35200cm (352m) -x

by cross multiplication

176x=35200

x=35200/176=200 times

17. circumference of clock = 2πr=2*3.14*15=94.2cm

for 1 min - 1 round

for 60min(1hr) -x

by cross multiplication

x=60 rounds

I hope my answer helps you ☺☺