How to find the area of an equilateral triangle

Practice Questions

High School Math › How to find the area of an equilateral triangle

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1

Triangle A: A right triangle with sides length , , and .

Triangle B: An equilateral triangle with side lengths .

Which triangle has a greater area?

2

What is the area of an equilateral triangle with side 11?

3

Find the area of an equilateral triangle whose perimeter is

4

What is the area of an equilateral triangle with sides 12 cm?

5

Equilateral_triangle

What is the area of an equilateral triangle with a side length of ?

6

Find the area of the following equilateral triangle:

Triangle

7

Equilateral_triangle

An equilateral triangle has a side length of find its area.

8

A circle contains 6 copies of a triangle; each joined to the others at the center of the circle, as well as joined to another triangle on the circle’s circumference.

The circumference of the circle is

What is the area of one of the triangles?

9

Determine the area of the following equilateral triangle:

Screen_shot_2014-02-27_at_6.40.28_pm

10

The area of square ABCD is 50% greater than the perimeter of the equilateral triangle EFG. If the area of square ABCD is equal to 45, then what is the area of EFG?

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