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A rectangular tin sheet is 32 cm long and 14 cm wide. It is rolled along its length to form a cylinder, with opposite edges just touching each ot
Question

A rectangular tin sheet is 32 cm long and 14 cm wide. It is rolled along its length to form a cylinder, with opposite edges just touching each other. Find the volume (in cm³) of the cylinder.​

A.

3585π\frac{3585}{\pi}​​

B.

3588π\frac{3588}{\pi}​​

C.

3582π\frac{3582}{\pi}​​

D.

3584π\frac{3584}{\pi}​​

Correct option is D

Given:

Length of rectangle (height of cylinder) h = 14cm

Breadth of rectangle (circumference of base) b = 32cm 

Formula Used:

When a rectangle is rolled along its length, the breadth becomes the circumference of the base and length becomes the height.

Circumference of circle =2πr 

Volume of Cylinder = πr2h

Solution: 

Circumference of circle =2πr  = 32 

r = 322×π=16π\frac{32}{2 \times \pi} = \frac{16}{\pi}​​

Now, 

Volume of cylinder = π×(16π)2×14\pi \times \left(\frac{16}{\pi}\right)^2 \times 14​​

3584π cm3\frac{3584}{\pi} \ cm^3​​

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