4 cm

Question

6 cm
9 cm
3 cm
Rectangle with a triangle on the bottom with one 90 degree angle
What is the area of the quadrilateral?

Answer 1

The area of the quadrilateral can be calculated by finding the area of the rectangle and the triangle separately, and then adding them together.

Area of the rectangle = length x width
= 9 cm x 6 cm
= 54 cm^2

Area of the triangle = 1/2 x base x height
= 4 cm x 3 cm x 1/2
= 6 cm^2

Total area of the quadrilateral = area of rectangle + area of triangle
= 54 cm^2 + 6 cm^2
= 60 cm^2

Therefore, the area of the quadrilateral is 60 square centimeters.