Question

Find the area of isosceles triangle whose equal sides measure 5 cm each and third side is 4cm

Answer 1

Answer:

10 cm^2

Step-by-step explanation:

since its an isosceles triangle and only two sides are of equal length, you can divide the third side in half and get two right-angled triangles:

4cm/2 = 2cm

calculate the area of one right-angled triangle:

(2cm * 5cm)/2 = 10cm^2 /2

                       = 5 cm^2

calculate the area of whole triangle by adding the area of both the right-angled triangles:  

5cm^2 * 2 = 10cm^2