1.

A pyramid has an equilateral triangle as its base of which each side is 1 m. Its slant edge is 3 m. The whole surface are of the pyramid is equal to :

A. $\frac{{\sqrt 3+ 2\sqrt {13} }}{4}sq.m$$
B. $\frac{{\sqrt 3+ 3\sqrt {13} }}{4}sq.m$$
C. $\frac{{\sqrt 3+ 3\sqrt {35} }}{4}sq.m$$
D. $\frac{{\sqrt 3+ 2\sqrt {35} }}{4}sq.m$$
Answer» D. $\frac{{\sqrt 3+ 2\sqrt {35} }}{4}sq.m$$


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