A closed metallic cylindrical box s 15 m high and it has a base whose radius is 21 cm. the sheet of the metal
costs per sq m., find the cost of the material used in the box. Also find the capacity of the box
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A closed metallic cylindrical box is 15 m high and it has a base whose radius is 21 cm. If the sheet of metal costs Rs. 70 per sq. m, find the cost of the material used in the box.
h=15 m
r=21cm
TSA =2πrh+2πr^2
=2πr(r+h)
=2×22×21(15)
7
=42x 22/7+15 146.999...
=147
Cost =70×147(cost by us)
=10,290Rs.
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