Prove that the area of an equilateral triangle is equal to 34a2 , where a is the side of triangle .

Prove that the area of an equilateral triangle is equal to $\frac{\sqrt{3}}{4} a^{2}$ , where a is the side of triangle .

Mixed-up sentence exercise

Put the parts in order to form a sentence. When you think your answer is correct, click on "Check" to check your answer. If you get stuck, click on "Hint" to find out the next correct part.