a closed cylindrical tank of height 8m and radius 3.5m is to be made from a metal sheet find the cost of the metal sheet required @ rupees 130 per m*m
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Answered by
16
Area of cylinder= 2*22/7*3.5 (8+3.5)
= 11.5 X 22
=253m^2
Cost= 130 X 253
=Rs.32890
= 11.5 X 22
=253m^2
Cost= 130 X 253
=Rs.32890
Answered by
5
EXPLANATION.
A closed cylindrical tank of height 8 m and radius 3.5 m is to be made from a metal sheet.
Metal sheet required at the rate of 130 per m plate.
As we know that,
Formula of :
Total surface area of cylinder = 2πr(r + h).
Using this formula in this question, we get.
⇒ 2πr(r + h).
⇒ 2 x 22/7 x 3.5 x (3.5 + 8).
⇒ 2 x 22 x 0.5 x 11.5.
⇒ 44 x 0.5 x 11.5.
⇒ 253 m².
Area of metal sheet = 253 m².
Metal sheet required at the rate of 130 per m plate.
Area of metal sheet x Cost of 1 m² metal sheet.
⇒ 253 x 130 = 32890.
∴ Cost of metal sheets is ₹ 32890.
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