Respuesta :

The area of the whole rectangle is 24 square cm and the height of the triangle is 6 cm.

What is a rectangle?

A rectangle is a type of quadrilateral that has its parallel sides equal to each other and all the four vertices are equal to 90 degrees.

Given that:

The given figure has divided into 2 triangles one is a striped blue triangle and the other is a striped green triangle.

To find out the length and area of a rectangle.

Area of triangle = 1/2(base)(height)

Width of rectangle = 4 cm

Area of striped blue triangle = 12 square cm

1/2(base)(height) =12

1/2(4)height = 12

Height =6 cm

(b) Height = 6 cm

Height of triangle=length of the rectangle

Area of rectangle = lengthxbreadth

Area of the whole rectangle = 6x4

(a) Area of  whole rectangle=24 square cm

Therefore, the area of the whole rectangle is 24  square cm and the height of the triangle is 6 cm.

Learn more about rectangles here:

https://brainly.com/question/28186939

#SPJ1