All SAT Math Resources
Example Questions
Example Question #4 : How To Find The Perimeter Of A Rectangle
You have a poster of one of your favorite bands that you are planning on putting up in your dorm room. If the poster is 3 feet tall by 1.5 feet wide, what is the perimeter of the poster?
You have a poster of one of your favorite bands that you are planning on putting up in your dorm room. If the poster is 3 feet tall by 1.5 feet wide, what is the perimeter of the poster?
Perimeter of a rectangle is found via:
Example Question #3 : How To Find The Perimeter Of A Rectangle
Three of the vertices of a rectangle on the coordinate plane are located at the origin, , and . Give the perimeter of the rectangle.
The rectangle in question is below:
The lengths of the rectangle is 10, the distance from the origin to ; its width is 7, the distance from the origin to . The perimeter of a rectangle is equal to twice the sum of its length and width, so calculate:
.
Example Question #2 : Rectangles
A rectangular garden has an area of . Its length is meters longer than its width. How much fencing is needed to enclose the garden?
We define the variables as and .
We substitute these values into the equation for the area of a rectangle and get .
or
Lengths cannot be negative, so the only correct answer is . If , then .
Therefore, .