Question

he diagonal of a cuboid is 25cm, breadth is 16cm and height is 12 cm. Find its length, volume and

surface area.

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Answer 1

Answer:

Given that l=20cm, b=12cm, h=9cm

∴T.S.A=2(lb+bh+lh)

                          =2[(20×12)+(12×9)+(20×9)]

                           =2(240+108+180)

                           =2×528

        ∴T.S.A=1056cm  ^2

Step-by-step explanation:

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Answer 2

diagonal of cuboid=√1^2+b^2+h^2

25=√16^2+12^2+x^2

squaring on both sides

625=256+144+x^2

625-256-144=x^2

225=x^2

√225=x

15=x

volume of cuboid =l×b×h

15×16×12

2880