Question

Find the surface area of a 10 cm $\times$ 4 cm $\times$ 3 cm brick.

• A. 84 sq.cm
• B. 124 sq.cm
• C. 164 sq.cm
• D. 180 sq. cm
• E. 190 sq.cm

Answer 1

The correct option is C

164 sq.cm

Surface area = [2(10$\times$4+4$\times$3+10$\times$3)] cm${}^2$ = (2$\times$82) cm${}^2$= 164 cm${}^2$