Question

Area of a right triangle is 54 cm2. If one of its legs is
12 cm long, its perimeter is

Answer 1

Step-by-step explanation:

half * base * height = 54

Let base = 12cm

=> 1/2* 12 * perpendicular = 54 ( height is considered as perpendicular since it's a right angled triangle)

perpendicular = 54/6= 9cm

So hypotenuse = sqrt ( 9^2+12^2) = sqrt(225) = 15cm

Now perimeter = 15+12+9= 36cm