Question

The dimension of an oil tin are 26 cm x 26 cm x 45 cm. Find the area of tin sheet required to make 20 such tins.

Answer 1

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Given, Length = 26cm
breadth = 26cm
Height = 45 cm
Therefore total surface area of cuboid= 2(lb+bh+hl)

=)2(26×26 + 26×45 + 45×26)

=)2(676 + 1170 + 1170)

=) 6032 cm2

Therefore area of 20 such tins is = 6032 ×20
= 120640cm2
In meters = 12.064 m2

So, cost of 20 tins = 12.064 ×10 = Rs.120.64 


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Answer 2

= 2(lb+bh+hl)
= 2(26x26)+(26x45)+(45x26)
=[2(26x26)+(26x45)+(45x26)]x20