Question

diameter of a base of a right circular cylinder is 42m and height is 10 cm.find the area of curved surface ​

Answer 1

Answer:

1320 is the answer

Step-by-step explanation:

The diameter is 42cm so the radius (r) will be half the diameter that is 21cm .

Height (h) is 10cm.

so the area of curved surface is 2πrh.

so the answer after calculation becomes 1320cm^2

Answer 2

Surface Area of curved surface of a cylinder is :-
2*pi*r * h
Since radius is diameter/2
r=21 m


Surface Area = 2 * 22/7 * 21 * 10
=2*22*3*10
=1320m^2