Question

10. A rectangular piece of paper is 22 cm in length and 10 min width. It is nolle
into a cylinder along its length. Find the surface area of this cylinder.​

Answer 1

Answer:

Since rectangular piece of paper of rolled along its length.

∴ 2πr = 22

r = 22 × 7 / 2 × 22 = 3.5 cm

Height of cyclinder (h) = 10 cm

∴ Volume of cyclinder = πr2h

= 22 / 7 × 3.5 × 3.5 × 10

= 385 cm3.

Step-by-step explanation:

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