A cylindrical vessel, without lid, has to be tin-coated on its both sides. If the radius of
the base is 70 cm and its height is 1.4 m, calculate the cost of tin-coating at the rate of
3.50 per 1000 cm?
Answers
Answer:
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Step-by-step explanation:
Radius of the base (r) = 0.5m = 0.5×100 cm = 50 cm
Height (h) = 1.4m = 1.4×100 cm = 140 cm
Surface area to be tin-coated = 2 (2πrh + πr^2)
= 2 [(2 × 3.14 × 50 × 140) + (3.14 × 50 × 50)]
= 103620
Cost of tin- coating at the rate of Rs.50 per 1000cm^2
= Rs.1000
Total cost = 50/1000 × 103620 = Rs.5181
Answer:
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5181 rupees
Step-by-step explanation:
Radius of the base (r) = 0.5m = 0.5×100 cm = 50 cm
Height (h) = 1.4m = 1.4×100 cm = 140 cm
Surface area to be tin-coated = 2 (2πrh + πr^2)
= 2 [(2 × 3.14 × 50 × 140) + (3.14 × 50 × 50)]
= 103620
Cost of tin- coating at the rate of Rs.50 per 1000cm^2
= Rs.1000
Total cost = 50/1000 × 103620 = Rs.5181