Question

The length and the breadth of a rectangle are 6 cm and 4 cm respectively. Find the height of a triangle whose base is 6 cm and the area is 3 times that of the rectangle.

Answer 1

Area of the rectangle is given by

A = l x b

   = 6 x 4

   = 24 sq . cm

Let h be the height of the triangle ,then 

`1/2 xx "base" xx h = 3"A"`

`1/2 xx  6 xx h = 3 xx 24` 

                  h = 24 cm