A cylindrical pillar is 50 cm in diamter and 3.5 is height .find the cost of painting the curved surface of pillar at the rate of Rs 12.50 per m^2
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Answered by
2
given r = 25cm
h = 3.5cm
c s a = 2πrh
= 2×22/7×25×35/10
= 22×25
= 550cm^2
so cost for 1m^2 = 12.50 = 1250 in cm^2
so for 550cm = 1250 × 550
= 687500 rupees
h = 3.5cm
c s a = 2πrh
= 2×22/7×25×35/10
= 22×25
= 550cm^2
so cost for 1m^2 = 12.50 = 1250 in cm^2
so for 550cm = 1250 × 550
= 687500 rupees
Answered by
1
2*22/7*25*350/10000=5.5
5.5*12.5=68.75
5.5*12.5=68.75
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