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The curved surface area of a cylindrical tin is... - WAEC Mathematics 1992 Question

The curved surface area of a cylindrical tin is 704cm2. Calculate the height when the radius is 8cm. [Take π = 22/7]

A
3.5cm
B
7cm
C
14cm
D
28cm
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Correct Option: C

Curved surface area of a cylindrical tin = 2πrh

2πrh=704cm2

2×227×8×h=704

h=704×72×22×8

h=14cm

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