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9

The dimensions of an oil tin are 26 cm× 26 cm× 45 cm. Find the area of the tin sheet required for making 20 such tins. If 1 square metre of the tin sheet costs Rs. 10, find the cost of tin sheet used for these 20 tins.

Given,

Dimensions of oil tin are = 26 cm × 26 cm × 45 cm

Then,

Area of tin sheet required for making one oil tin = total surface area of oil tin

=

=

Area of tin sheet required for 20 oil tins =

So,

Cost of 1 m^{2} tin sheet = Rs. 10

∴cost of 12.064 m^{2} tin sheet =

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