Question

Find the area of an isosceles triangle with two equal sides 5 cm each and the third side as 8 centimetre

Answer 1

Answer: 12

Step-by-step explanation:

Area of isosceles triangle  = $\frac{1}{2} *base*\sqrt{ side^2 - (\frac{base}{2} )^2}$

side = 5 cm

base = third side = 8 cm.  so, base/2 = 4.

putting values in formula,

Area = $\frac{1}{2} *8*\sqrt{5^2-4^2}$

        = $4*\sqrt{25-16}$

        = $4*\sqrt{9}$

        = $4*3$

        = $12$