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A rectangular sheet of cardboard 132 cm x 50 cm is rolled along its length and a cylinder is formed. Find the radius of the base of the cylinder.

A rectangular sheet of cardboard 132 cm x 50 cm is rolled along its length and a cylinder is formed. Find the radius of the base of the cylinder.
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1 vote
A rectangular sheet of cardboard 132 cm x 50 cm is rolled along its length and a cylinder is formed. Find the radius of the base of the cylinder.

User Hhravn
by
9.2k points

1 Answer

7 votes
Since it is rolled via it's length, the circumference of the circle must be 50 cm.

The formula for the circumference is 2
\pi r

50 = 2
\pi r
25 =
\pi r
7.95774715459 = r

Your radius should be approximently 7.96 cm. Hope this helps!
User Oleksandr Novik
by
8.7k points
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