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Question

Tick (✓) the correct answer:
The surface area of a (10 cm × 4 cm × 3 cm) brick is
(a) 84 cm2
(b) 124 cm2
(c) 164 cm2
(d) 180 cm2

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Solution

(c) 164 sq cm

Surface area =2(10×4+10×3+4×3)=2(40+30+12)=164 cm2

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