The diameter of a cyclinderical well is 4.5m and depth of the well is 144cm. Find the cost of comenting it's inner curved surface area at the rate of 12.50 per square
metre.
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Hello Mate!
Converting 144 cm is equal to 1.44 m
So, area of curved surface of cylinder = 2πrh
= 2π(d/2)h
= πdh
= 22/7 × 4.5 m × 1.44 m
= 20.4 m²
Cost of commenting = 20.4 × Rs 12.5
= Rs 255
Have great future ahead!
Converting 144 cm is equal to 1.44 m
So, area of curved surface of cylinder = 2πrh
= 2π(d/2)h
= πdh
= 22/7 × 4.5 m × 1.44 m
= 20.4 m²
Cost of commenting = 20.4 × Rs 12.5
= Rs 255
Have great future ahead!
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