Question

The sum of length, breadth and height of the cuboid is 20 cm and the length of its diagonal is 12 cm. Find the surface area of the cuboid?

Answer 1

Answer:

=L²+b²+h² ) = 12cm.

=L²+b²+h² =144cm².

=L+b+h = 20cm.

Surface area is 2( lb+bh+hl)

Using

(L+b+h)² = l²+b²+h²+ 2(lb+bh+hl)

400=144+ Surface area

Surface area = 256cm²

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