Question: What is the are of an equilateral triangle of side 24 cm?
Options:
(A) 663 cm2
(B) 743 cm2
(C) 643 cm2
(D) 645 cm2
(E) 1443 cm2 Let's think first. Some random reasoning:
Area of an equilateral triangle = 3/4 S2
If S = 24, Area of triangle = 3/4 * 24 * 24 = 1443 cm2; The final answer: (E).