Question

An equilateral triangle has a perimeter of 78 cm.

If the height of the triangle is 15.5 cm, what is the area of the triangle?

Answer 1

The area of the triangle is : 201.5 cm ²

Explanation:

All the sides of an equilateral triangle are equal. A triangle has 3 sides. If the perimeter is 78cm, 78 cm needs to be divided by 3 so find each side of the triangle.

78÷3=26

In order to find the area of a triangle, you need to multiply the base by the height and divide the product by 2.

26×15.5=403

403÷2= 201.5

So therefore, The area of the triangle is : 201.5 cm ²