Question

The area of a triangle is equal to that of a square whose each side measures 60cm. Find the side of the triangle whose corresponding altitude is 90cm.

Answer 1

Here it is given that
Area of triangle = area of square
any side of square = 60cm
now Area of square =a²
= 60²
= 3600cm²
it is also the area of triangle
so,
area of triangle= ½×base ×height
3600 = ½×b×90
3600 × 2/90 = base
base = 80cm
so the side of the triangle is 80cm

hope it helps you