Question

40 students of class 9 planned to visit an old age home and to spend the whole day wit
its inmates Each one prepared a cylindrical flower vase using cardboard to gift inmate
The radius of the cylinder 4.2 cm and height is 14cm.
a) What is the amount spent for purchasing the cardboard at the
rate of Rs.30 per 100cm2.
b) What is the volume of each cylindrical vase?​

Answer 1

Answer:

use the volume of cylinder the volume of cylinder is 4upon 3 pair r square