SOLUTION: An equilateral triangle has 27 cm. What is its area? Thank you.

Question 1011926: An equilateral triangle has 27 cm. What is its area? Thank you.
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Each side is cm.

An altitude separates two congruent special right triangles. The altitude serves as height and the hypotenuse is also 9 cm. The short leg will be half the hypotenuse, or .

You want an area , using y as the altitude. The factor 2 is used on the far left because TWO of the special 30-60-90 right triangles make your given one equilateral triangle.

find y using pythagorean theorem formula.

Answer by ikleyn(52777) (Show Source): You can put this solution on YOUR website!
.
An equilateral triangle has 27 cm. What is its area?
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Read your post. It says:

"An equilateral triangle has 27 cm."

What is 27 cm ???????

The side, the perimeter, the height? What ??

Edit and re-submit.

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