Question: What is the are of an equilateral triangle of side 12 cm?
Options:
(A) 363 cm2
(B) 743 cm2
(C) 643 cm2
(D) 645 cm2
(E) 143 cm2 Random thoughts:
Area of an equilateral triangle = 3/4 S2
If S = 12, Area of triangle = 3/4 * 12 * 12 = 363 cm2; The final answer: (A).