Math, asked by dharunsri146, 2 months ago

2. A pen holder made up of a cardboard is in the shape of a cylinder with a
base of radius 2 cm and height 10 cm. Find the area of the cardboard
required to make 15 pen holders.

Answers

Answered by sheetal9412

2

Step-by-step explanation:

curved surface area of cylinder = 2π rh

= 2x22÷7x2x10

= 880=7

=125.71486

total surface area of cylinder = 2πr (h+r)

=2x22÷7x2 (10+2)

= 88÷7x12

= 150.857143

total surface area of 15 cylinders

= 150.857143 x 15

=2262.85715

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