Question

an isosacles right triangle has two equal side of length 5 cm what is its area

Answer 1

We know that the isosceles right triangle has two equal sides and a 90 degree angle between them. And we know that each side is equal to 5. so we will find the hypotenuse side by the Pythagorean Theorem. 
Hint: Draw a picture will be better to see. 
Pythagorean theorem: h^2 = a^2 + b^2 = 5^2 + 5^2 = 25 + 25 = 50 so h = sqrt(50) or h = 5sqrt(2) 
Hope it helps:)

Answer 2

Answer:

area of the isosceles right triangle is 12.5 cm ².

Step-by-step explanation:

Given that:

∠ABC = 90°

AB=BC = 5 cm

To find:

Area of isosceles right triangle

So, as we know that:

Area of isosceles right triangle = 1/2 × base×height

                                                    = 1/2 × BC × AB

                                                    = 1/2 × 5 × 5

                                                    = 25/2 cm ²

                                                    = 12.5 cm ²

Hence, the area of the isosceles right triangle is 12.5 cm ².

i hope it helps you