Question

What will be the area of an isosceles triangle with unequal
side of 8 cm and each equal side
5cm?
Seeds Sign​

Answer 1

Answer:

12 cm²

Step-by-step explanation:

Given,

Two Equal Sides = 5cm

Also,

Third Side = 8cm

So,

Semi-Perimeter

= (a + b + c)/2

= (5 + 5 + 8)/2

= (10 + 8)/2

= 18/2

= 9

Now,

Area of ∆ = √s(s - a)(s - b)(s - c)

Area of ∆ = √9(9 - 5)(9 - 5)(9 - 8)

Area of ∆ = √9(4)(4)(1)

Area of ∆ = √144

Hence,

Area of ∆ = 12 cm²