Right isosceles

Calculate area of the isosceles right triangle which perimeter is 26 cm.

Correct result:

S =  29 cm2

Solution:

o=26 cm a=b c=a2+b2=a2+a2=a 2 o=a+b+c o=2a+2 a a=o2+2=262+27.6152 cm  S=a22=7.615222=29 cm2

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