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What is the length of the side of a cube that has a surface area of 864 in2

A.11in
B.12in
C.13in
D.14in

1 Answer

4 votes
Let
b-----------> length of the side of cube

we know that

the area surface of cube=6*b²
A=6*b²=864 in²----------------> b=√(864/6)=12 in

the answer is b=12 in
User Rizwan Ansar
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