It is required to colour paint a glass cylindrical chimney of height 20 m and base diameter 14 m. Find the area to be painted.( $π = \frac{22}{7}$ )

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Solution

Curved Surface area = 2πrh

= 2 $\times$ $\frac{22}{7}$ $\times$ 7 $\times$ 20 = 880 $m^{2}$

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It is required to colour paint a glass cylindrical chimney of height 20 m and base diameter 14 m. Find the area to be painted.(π=227)

Curved Surface area = 2πrh = 2 × 227 × 7 × 20 = 880 m2

It is required to colour paint a glass cylindrical chimney of height 20 m and base diameter 14 m. Find the area to be painted.( $π = \frac{22}{7}$ )

Curved Surface area = 2πrh

= 2 $\times$ $\frac{22}{7}$ $\times$ 7 $\times$ 20 = 880 $m^{2}$