A rectangular sheet of paper having length 28 cm and breadth 12 cm is – InterviewSolution

1.

A rectangular sheet of paper having length 28 cm and breadth 12 cm is folded along itsbreadth to form a cylinder. Find the curved surface area of the cylinder.

Answer»

length=28cm ,diameter =12CM So the RADIUS =diameter/2=6

Curved surface AREA of cylinder =

$2\pi \: rh$

=

$2 \times \frac{22}{7} \times 6 \times 28 \\ = 2 \times 22 \times 6 \times 4 \\ = 44 \times 24 = 1056 {cm}^{2}$

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