CBSE Class 7 Answered
Triangle ABC shown below is inscribed inside a square of side 20 cm. Find the area of the triangle.
Since we know that the square is a polygon with all the four angles equal to 90o, we have
The height (h) of the triangle ABC = 20 cm
Also, the base (BC) of the triangle is equal to one of the sides of the square.
Thus, BC (b) = 20 cm
Thus, area is given by
Area of triangle ABC = x b x h = x 20 x 20
= 200 cm2