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Calculate the total surface area of a cupboard ... - JAMB Mathematics 2018 Question

Calculate the total surface area of a cupboard which measures 12cm by 10cm by 8cm

A
1920cm\(^2\)
B
592cm\(^2\)
C
296cm\(^2\)
D
148cm\(^2\)
correct option: b

Total surface area of a cupboard, 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\(^2\)

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