The dimensions of the rectangular prism is 8in×4in×6in. The total surface area of a rectangular prism is x3in2. Find the value of x.
A
208
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B
624
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C
208in2
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D
624in2
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Solution
The correct option is B 624 Let's draw a rectangular prism with dimensions given in the questions.
Given,
Length of the rectnagular prism l=8 in
Breadth of the rectnagular prism b=4 in
Height of the rectnagular prism w=6 in
→As we know,
The total surface area of a rectangular prism =2(lb)+2(bh)+2(lh)
(∵Given, total surface area =x3) x3=(2×8×4)+(2×4×6)+(2×8×6)