Question

The height of an equilateral triangle is 15cm and its perimeter is 36cm. Find the area of the triangle

Answer 1

Answer:

90 cm²

Step-by-step explanation:

Find the length of one side of the triangle:

Given that it is an equilateral triangle, all sides have the equal length.

Length of the side = Perimeter ÷ 3

Length of the side = 36 ÷ 3

Length of the side = 12 cm

Find the area:

Area = 1/2 x base x height

Area = 1/2 x 12 x 15

Area = 90 cm²

Answer: Area = 90 cm²

Answer 2

Answer:

To Find :

→ The length of one side of the triangle.

Given:

→It is an equilateral triangle.

→All the sides have the equal length.

Solution:

Side:

→Length of the side = Perimeter ÷ 3

→Length of the side = 36 ÷ 3

→Length of the side = 12 cm

Area:

→ Area = 1/2 x base x height

→ Area = 1/2 x 12 x 15

→ Area = 90 cm²