Q9 of 94 Page 228

The surface area of a (10 cm x 4 cm x 3 cm) brick is

We know that,

Surface area of a cuboid = 2 (lb + bh + hl)


= 2 (10 × 4 + 10 × 3 + 4 × 3)


= 2 (40 + 30 + 12)


= 164 cm2


Hence, option C is correct

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