Question

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Question:-
\begin{gathered} \\ \end{gathered}​
The radius of the base of the solid right cylinder is 4 cm and its height 7 cm. On melting this solid cylinder how many right circular cylinder of radius 2 cm and height
3 \times \frac{1}{2}3×21​
cm can be made.

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Answer 1

Answer:

Answer

Given, the radius of the base of a right circular cylinder is 4 cm and its height is 14 cm.

Here, r=4 cm and h=14 cm

Curved surface area of cylinder =2πrh

=2×

7

22

×4×4

=44×8

=352 cm

2

∴ the curved surface area of cylinder is 352 cm

2

.