JAMB - Mathematics (2018 - No. 10)
Calculate the total surface area of a cupboard which measures 12cm by 10cm by 8cm
1920cm\(^2\)
592cm\(^2\)
296cm\(^2\)
148cm\(^2\)
Explanation
Total surface area of a cupboard is given by the equation A = 2(lb + bh + lh) L = 12, b = 10, h = 8
A = 2((12 x 10) + (10 x 8) + (12 x 8))
A = 2(120 + 80 + 96)
A = 2 x 296
A = 592cm\(^2\)
Answer is B
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