Practice | Hashtable

1. The dimensions of a cuboid are 7 cm, 11 cm and 13 cm. The total surface area is :

A. 311 $c m^{2}$

B. 622 $c m^{2}$

C. 1001 $c m^{2}$

D. 2002 $c m^{2}$

Solution:

Surface area :

\begin{aligned} = 2 (7 \times 11 + 11 \times 13 + 7 \times 13) \\ = 2 \times 311 \\ = 622 c m^{2} \end{aligned}

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