## anonymous one year ago Need help finding the area of an equilateral triangle..

1. anonymous

Picture?

2. anonymous

Find the area of the equilateral triangle if a side is $14\sqrt{3}$ round to the nearest whole number |dw:1444078683503:dw|

3. anonymous

Okay, the answer A=3 4a2=3 4·1432≈8854.67674

4. anonymous

uhm. The answer choices are 1) 85 ft^2 2) 170 ft^2 3) 255 ft^2 4) 510 ft^2

Area of equilateral triangle = sqrt(3) * (side)^2 / 4

$Area = \frac{ \sqrt{3} }{ 4 }*(side)^2$

$Area = \frac{ \sqrt{3} }{ 4 }*(14\sqrt{3})^2$

$Area = \frac{ \sqrt{3} }{ 4 }*(588)$

$Area = \sqrt{3} * 147$

10. anonymous

= 254.6114687126249484

There you go :)

12. anonymous

Well thank ya[:

Find more explanations on OpenStudy