SSAT Middle Level Math : How to find the area of a rectangle
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Example Questions
Example Question #82 : Quadrilaterals
Refer to the above figures. The square at left has area 160. Give the area of the rectangle at right.
The area of the square, whose sides have length 
The square and the rectangle have the same area, so the correct response is 160.
Example Question #41 : How To Find The Area Of A Rectangle
Figure NOT drawn to scale.
Figure 1 and Figure 2 have the same area. The shaded portion of Figure 1 has area 64. What is the area of the shaded portion of Figure 2?
Figure 1 is a rectangle divided into 24 squares of equal size; 3 of the squares are shaded, which means that 
Figure 2 is a circle divided into 8 sectors of equal size; 1 is shaded, which means that 
Since the two figures are of the same area, the two shaded portions, each of which have an area that is the same fraction of this common area, must themselves have the same area. Since the shaded portion of Figure 1 has area 64, so does the shaded portion of Figure 2.
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