Question

The length of a side in an equilateral triangle is 5 inches. Find the area of the triangle.

5√3 square inches
6.25√3 square inches
12.5√3 square inches

Answer 1

The answer is 6.25√3

Answer 2

Option B :
`6.25√(3)` square inches.

Explanation:

The area of an equilateral triangle is given by :

A =
`(√(3))/(4)a^(2)`

Where, a is the side of the triangle.

Here in the question, we have been given the side of the triangle as 5 inches.

So, area is :
`(√(3))/(4)*5^(2)`

Simplifying this we get,
`√(3)*(25)/(4)`

Area =
`6.25√(3)` square inches.