Question

An isosceles triangle has perimeter 20 cm and each of the equal sides is 6 cm, then its area is ____.

2 points


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Answer 1

Answer:

A=1/2×b×h

A=1/2×20×6=160

I HOPE THIS HELPS U

Answer 2

Perimeter = 20

a+a+x=30

x=8cm

for finding height,

apply Pythagoras theorem,

h=2√5cm

Now the area of isosceles triangle=1/2×b×h

Area=8√5cm^2