Question

Area of a right triangle is 54 . If one of its legs is 12 cm long, its perimeter is​

Answer 1

Answer:

36 cm

Step-by-step explanation:

½ x base x height ( or ½ x b x h ) = 54

=) ½ x b x 12 = 54

=) b x 6 = 54

=) b = 9

We get base to be of 9 cm long.

Now,

by Pythagoras theorem,

Hypotenuse2 = Base2 + Height2

= 9 square+ 12 square

= 81 + 144

= 225

= 15 square

=) Hypotenuse = 15

Therefore, perimeter = sum of sides

= 9 cm + 12 cm + 15 cm

= 36 cm

Hope this helps you.

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