Question

A sports company was ordered to prepare 100 paper cylinders for packing shuttle cocks. The required dimensions of the cylinder are 35 cm length /height and its radius is 7 cm. Find the required area of thick paper sheet needed to make 100 cylinders? ​

Answer 1

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Step by step solution :

Given total answer will be 15400 cm².

Step by step solution is below!

Given :

that, the radius of cylinder(r) required is 7 cm and height (h) is 35 cm.

❍ And, Surface area of cylinder is - 2πrh

⇒ Surface area

= 1540cm2

⇒The required area of thick paper sheet needed to make 100 cylinders = 1540 × 100 cm2

= 154000 cm2

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Other type solution :

Complete step-by-step answer:

Given dimension of the cylinder are:

Radius of cylinder is = 7cm

Height or length of cylinder is = 35cm

Also,

we know that the surface area of cylinder or curved surface area of cylinder is given as:

2πrh , where r is radius and h is height or length of the cylinder.

⇒Surface area of cylinder=2πrh

Substituting values in above formula. We have,

Surface area=2×227×7×35

⇒Surface area=2×227×7×35

⇒Surface area=2×22×35

⇒Surface area=44×35

⇒Surface area=1540

Therefore, from above we see that the surface area of the cylinder is 1540cm2 .

❍ Since, it is required to make 100 such a cylinder.

. : Therefore, total sheet of paper required to make 100 cylinders given as.

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