Area of an equilateral triangle = âˆš3/4 S2
If S = 10, Area of triangle = âˆš3/4 * 10 * 10 = 25âˆš3 cm2;
What is the are of an equilateral triangle of side 10 cm?

a: 66âˆš3 cm2
b: 25âˆš3 cm2
c: 64âˆš3 cm2
d: 64âˆš5 cm2
e: 14âˆš3 cm2