Question

the base of an isosceles right triangle is 30cm. it's area is​

Answer 1

Answer:

225cm°2

Step-by-step explanation:

The base of an isosceles right triangle is 30cm. How would one find its area?

Let ABC is an isosceles right angled triangle ,in which BC= 30 cm ,angle BAC

= 90° and AB=AC = x (let)

In isosceles right angled triangle BAC

AB^2+AC^2=BC^2

x^2+x^2=(30)^2

2.x^2=900

x^2=450……………(1)

Area of the triangle ABC = (AB×AC)/2. =(x.x)/2= (x^2)/2 =450/2= 225 cm^2. Answer.