Isosaleez triangel...2 sides the same, so side1=side2, but side3 differ
Herons formula for area av triangels:
half=(side1+side2+side3)/2
sins side1=side2, mae prefer half=side1 +(side3/2)
triangel area=sqrt[(half-side1)*(half-side2)*(half-side3)]
but side2=side1, so area=sqrt[(half-side1)^2 * (half-side3)]
=(half-side1)*sqrt(half -side3)