Question

Find the area of the isosceles triangle.

13 cm is the side length
10 cm is the base length
what is the hight?
and area?

Answer 1

The hight length : h

The base length : a

Apply the Pythagorean theorem in the right triangle :

h² = 13² - (10/2) = 144

h = √144 = 12 cm

S = (a x h)/ 2 = ( 10 x 12 )/2 = 60 cm²

Explanation: