The diameter and height of a cylindrical chimney are 3m and 7m respectively find the cost of painting its exterior curved surface at the rate of 50 rupees per m square
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Given , diameter= 3m
and height= 7m
so, the radius= D/2= 3/2= 1.5
now the formula for curved surfaces= 2πrh
si, 2×22/7×1.5×7=44×1.5=66m^2
given 50 rupees per metre square rate of painting so 66×50=3300 RS
hope it help you
and height= 7m
so, the radius= D/2= 3/2= 1.5
now the formula for curved surfaces= 2πrh
si, 2×22/7×1.5×7=44×1.5=66m^2
given 50 rupees per metre square rate of painting so 66×50=3300 RS
hope it help you
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