Question on: JAMB Mathematics - 2024
Calculate the total surface area of a cupboard which measures 12cm by 10cm by 8cm.
A
1920cm²
B
592cm²
C
296cm²
D
148cm²
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Correct Option: B
Total surface area of a cuboid:
\[ \, 2(lw + lh + wh) \, \]
Substitute:
\[ 2(12 \times 10 + 12 \times 8 + 10 \times 8) \]
\[ 2(120 + 96 + 80) = 2(296) = 592 \]
Total surface area = 592 cm²
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