the ratio of the sides of a cubiod is 3:4:2 if the volume of the cubiod is 12288cm cube find the surface area of the cubiod
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Answer:
volume of cuboid =l×b×h=448cm
3
=l×b×7=448cm
3
=l×b=64cm
2
but base is square
∴l=b
∴l
2
=64cm
2
⇒l=b=8cm
surface area =2(lb+lh+bh)
=2(8×8+8×7+8×7)
=2(64+56+56)
=352cm
2
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