Home » Test Prep » ACT Section 2: Math » What is the area of the rectangle?
In the diagram above, what is the area of the rectangle?
A. 6ab square units
B. 8ab square units
C. 9b2 square units
D. 12ab square units
E. 16b square units
Correct Answer: B
Explanation/Reference:
Explanation:
The y-axis divides the rectangle in half. Half of the width of the rectangle is a units to the left of the y-axis and the other half is a units to the right of the y-axis. Therefore, the width of the rectangle is 2a units. The length of the rectangle stretches from 3b units above the x-axis to b units below the x-axis. Therefore, the length of the rectangle is 4b units. The area of a rectangle is equal to lw, where l is the length of the rectangle and w is the width of the rectangle. The area of this rectangle is equal to 2a x 4b = 8ab square units.
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