Question

4. A square and an equilateral triangle have the same perimeter. The
diagonal of the square is 9 cm. Find the area of the triangle. === If the​

Answer 1

Answer:

Perimeter of triangle = Perimeter of square

» 3x = (4× 9/√2)

» x = 6√2

Therefore,

A (∆) = √3/4 side²

= 18√3 cm²