A square and a rectangle have equal areas. The square's side is 20 cm, and the rectangle's length is 25 cm. Find its breadth.
16 cm
Area of square = 20 x 20 = 400 sq cm. Breadth of rectangle = Area/Length = 400/25 = 16 cm.
Calculate the area of the triangle whose sides are 8 cm, 9 cm and 13 cm. (Rounded up to two decimal places)