Question

If every side of eqilaterql triangle is doubled then the increase area of triangle...

Answer 1

Let the initial side be a units

Area = (√3)a²/4 sq. units

Now, side is doubled,
new side, a' = 2a

New area = (√3)(2a)²/4
                =4×[(√3)a²/4]
                =4×(initial area)
Area of new triangle will be 4 times the old one.