2. A cuboid has its base area 24sq.cm and height 6cm. What is its
volume?
[
A) 24cm
B) 30cm? C) 72cm
D) 144cm
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1
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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