Question

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 1

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