Question

The diameter of the base of a right circular cylinder is 4.2 DM and its height is 1 DM . Find the area of the curved surface CM ².

Answer 1

1dm=10cm

So the height is 10cm and the diameter is 42cm.

Area of the curved surface of cylinder is 2πrh.

=2×(22/7)×21×10

=44×3×10

=1320 sq cm

Thanks for asking .

I hope this helps !!!