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Surface Area of a Cylinder

cm is the hei...

Question

___ cm is the height of a cylinder whose radius is 14 cm and the total surface area is 2640 sq.cm

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Solution

Let r be the radius and h be the height of the cylinder.

Total surface area of cylinder = 2 π r² + 2 π r h

2640 = 2 x (3.14)(14)² + 2(3.14)(14) h

2640 = 1230.88 + 87.92h

h = 16.02

h = 16 cm

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