Question

A rectangular piece of paper 17 cm long and 7 cm broad is rolled along its breadth to form cylinder. Find its volume and curved surface.

Answer 1

Answer:

H / 17

2pia r /

Answer 2

Its volume and curved surface are 64.64 cubic cm and 117.54 sq.cm. respectively.

Step-by-step explanation:

Length of paper = 17 cm

Breadth of paper = 7 cm

It is rolled along its breadth to form cylinder.

So,$2 \pi r = 7 \\2 \times \frac{22}{7} \times r = 7 \\r=\frac{7 \times 7}{2 \times 22} \\r=1.1 cm$

Height of cylinder = 17 cm

Volume of cylinder =$\pi r^2 h = \frac{22}{7} \times 1.1^2 \times 17=64.64 cm^3$

Curved surface area of cylinder =$2 \pi rh = 2 \times \frac{22}{7} \times 1.1 \times 17=117.54 cm^2$

Hence its volume and curved surface are 64.64 cubic cm and 117.54 sq.cm. respectively.

#Learn more:

A rectangular piece of paper with 88 cm long and 7 cm broad is rolled along its length to form a cylinder . Find the volume of the cylinder thus formed .

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