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Find the area of an isosceles triangle e...

Find the area of an isosceles triangle each of whose equal sides measures 13 cm and whose base measures 20 cm.

Text Solution

Verified by Experts

We can use Heron`'`s formula to calculate the area of the given triangle.
Here, `a = 13cm,b = 13cm and c = 20cm`
So, `s = (a+b+c)/2 = (13+13+20)/2 = 23`
So, Area,`A = sqrt(s(s-a)(s-b)(s-c)) = sqrt(23(23-13)(23-13)(23-20))`
`A = sqrt(23**10**10**3) = 10sqrt69cm^2`
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