1.

The surface area of a (10 cm x 4 cm x 3 cm) brick is A. 84 cm2 B. 124 cm2 C. 164 cm2 D. 180 cm2

Answer»

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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