1.

A rectangular sheet of paper, 44 cm*20 cm is rolled along its lenght to form a cylinder. Find the vol. Of the cylinder so formed.

Answer»

Its FOLDED ALONG its LENGTH so its length will be circumference of the base

2 πr = 44

πr = 22

22/7 r = 22

r = 7 cm

height = 20 cm


Volume will be πr^2 h = 22/7 x 7 x 7 x 20 = 3080 cm cube



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