A heating coil is arranged inside an iron cylinder of base radius 3.5 m and height 6.5 cm. The radiating surface of the cylinder is

(Take pi= $\frac{22}{7}$ )

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Solution

Total radiated area = Total surface area = 2 π r(r+h)= 220 sq. cm

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A heating coil is arranged inside an iron cylinder of base radius 3.5 m and height 6.5 cm. The radiating surface of the cylinder is

(Take pi= $\frac{22}{7}$ )

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