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A hot body at 800^@C is radiating 500 J...

A hot body at `800^@C` is radiating 500 J of energy per minute. Calculate the surface area of the body if emissivity is 0.23 and Stefan's constant is `5.67 xx 10^(-8) Wm^(-2) K^(.-4)` .

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`4.8 cm^2`
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