Question

a sheet measuring 44 m * 11m is folded along its length 44m to form a cylinder. find the radius of this cylinder?

Answer 1

Answer:

1.75 m.

Step-by-step explanation:

Let'a assume the radius of the cylinder is r m.

Thus, the area of its curved surface will be (2πrh) m².

As per the question, the rectangular sheet is folded along its length, that is 44 m.

Thus, the height(h) of the cylinder becomes 44 m.

Area of the rectangular sheet = (44 X 11) = 484 m².

Thus, it can be said that,

(2πrh) = 484

or, πrh = 484/2

or, (22/7)rh = 242

or, rh = (242 X 7)/22

or, 44r = (242 X 7)/22 [As, explained above why h=44 m]

or, r = (242 X 7)/(22 X 44)

or, r = 1.75

Thus the radius of the cylinder is 1.75 m.

Answer 2

This is the answer to your question
Ans. 7m