Question

A rectangle of length 44 cm is folded along with its breadth and formed a cylinder then the radius of the cylinder(cms) is

Answer 1

Let the radius be r

we know that the length of the sheet = circumference of the circle

and height of the cylinder = 18cm

44 = 2

r

2 * 22/7 r = 44

r = (44*7) / (22*2)

r = 7cm

volume of cylinder = 

r2h

=22/7 * 7*7 * 18

= 2772 cm3

Answer 2

Let the radius be r

we know that the length of the sheet = circumference of the circle

and height of the cylinder = 18cm

44 = 2

r

2 ×22/7 r = 44

r = (44×7) / (22×2)

r = 7cm

volume of cylinder = 

r2h

=22/7 × 7×7 ×18

= 2772 cm3

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