Question

Each of the two equal sides of an isosceles right triangle is 18 cm long. Its area is​

Answer 1

Answer:

54 cm

Step-by-step explanation:

Divide the triangle into two congruent right angled triangle with hypotenuse 15 cm and base =

2

18

=9cm

With pythagoras theorem : 15

2

=9

2

+h

2

h

2

=225−81=144

h=12

Area of one right angled triangle =

2

1

×b×h =

2

1

×9×12 = 54cm

2