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What is the area of this quadrilateral? 4 ft J3R 10 ft 10 ft 3AC 4 ft O A. 36 square feet O B. 42 square feet O C. 12 square feet O D. 30 square feet

Answer :

Take into account the area of the three parts of the figure.

There are two equal triangles, their areas are:

A1 = b·h/2 = (3 ft)(4 ft)/2 = 6 ft²

A2 = 6 ft²

The area of the rectangle is:

A3 = w·l = (10 ft)(3 ft) = 30 ft²

The area of the total figure is:

AT = A1 + A2 + A3

AT = 6 ft² + 6 ft² + 30 ft²

AT = 42 ft²

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