PSAT Math : How to find the perimeter of a square
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Example Questions
Example Question #1 : How To Find The Perimeter Of A Square
A circle with a radius 2 in is inscribed in a square. What is the perimeter of the square?
24 in
12 in
32 in
28 in
16 in
16 in
To inscribe means to draw inside a figure so as to touch in as many places as possible without overlapping. The circle is inside the square such that the diameter of the circle is the same as the side of the square, so the side is actually 4 in. The perimeter of the square = 4s = 4 * 4 = 16 in.
Example Question #2 : How To Find The Perimeter Of A Square
Square X has 3 times the area of Square Y. If the perimeter of Square Y is 24 ft, what is the area of Square X, in sq ft?
112
54
108
72
144
108
Find the area of Square Y, then calculate the area of Square X.
If the perimeter of Square Y is 24, then each side is 24/4, or 6.
A = 6 * 6 = 36 sq ft, for Square Y
If Square X has 3 times the area, then 3 * 36 = 108 sq ft.
Example Question #3 : How To Find The Perimeter Of A Square
A square has an area of 
The area of the given square is given by 
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