Calculate the total surface area of a cupboard which measures 12cm by 10cm by 8cm
A
1920cm2
B
592cm2
C
296cm2
D
148cm2
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
Total surfaced area of a cupboard = 2(lb + lh + bh)
l = length h = height b = base
l = 12cm h = 10cm b = 8cm
T.S.A = 2(\(12 \times 8 \times + 12 \times 10 + 8 \times 10\))
= 2\((96 + 120 + 80)cm^2 = 592cm^2\)
Source: Myschool Past Questions Archive (Record #26631)