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Find the curved surface area of the cylinder shown. (Take π = $\frac{22}{7} .$ )

Class 8Surface Area of a CylinderMensuration

A220 sq cm
B748 sq cm
C440 sq cm
D1540 sq cm

Step-by-Step Solution

CSA = 2πrh

= 2 \times \frac{22}{7} \times 7 \times 10 = 440

sq cm. (1540 is the volume π

r^{2}

h; 748 adds both ends; 220 forgets the factor 2.)

Answer: C) 440 sq cm

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