Question

Find the area of an isosceles right angle triangle whose equal sides are 15 cm each.​

Answer 1

Answer:

Base = 15cm

Height = 15cm

=> 1/2 × base × height

=> 1/2 × 15 × 15

=> 1/2 × 225

=> 225/2

=> 112.5cm²

Hence, the area of an isosceles equilateral triangle is 112.5cm²

Step-by-step explanation:

Answer 2

Given:

Side of an isosceles equilateral triangle = 15cm.

Find:

Area of triangle

Solution:

All sides of an Isosceles equilateral triangle are equal.

Side = 15cm

The area of an isosceles equilateral triangle = 1/2 × base × height

Base = 15cm

Height = 15cm

=> 1/2 × base × height

=> 1/2 × 15 × 15

=> 1/2 × 225

=> 225/2

=> 112.5cm²

Hence, the area of an isosceles equilateral triangle is 112.5cm²

Important Information:

The Formula for Isosceles Triangle:-

The perimeter of an Isosceles Triangle: P = 2× a + b

Area of an Isosceles Triangle: A = 1/2 × b × h

The altitude of an Isosceles Triangle: h = √(a²–b²/4)

Where,

• P = Perimeter
• a = The measure of the equal sides
• b = The base of the triangle
• A = Area
• h = Altitude or height of the triangle

I hope it will help you.

Regards.