All HSPT Math Resources
Example Questions
Example Question #1 : Rectangles
A rectangle has a width of 2x. If the length is five more than 150% of the width, what is the perimeter of the rectangle?
10(x + 1)
6x2 + 5
5x + 10
6x2 + 10x
5x + 5
10(x + 1)
Given that w = 2x and l = 1.5w + 5, a substitution will show that l = 1.5(2x) + 5 = 3x + 5.
P = 2w + 2l = 2(2x) + 2(3x + 5) = 4x + 6x + 10 = 10x + 10 = 10(x + 1)
Example Question #2 : Quadrilaterals
ABCD is a parallelogram. BD = 5. The angles of triangle ABD are all equal. What is the perimeter of the parallelogram?
If all of the angles in triangle ABD are equal and line BD divides the parallelogram, then all angles in triangle BDC must be equal as well.
We now have two equilateral triangles, so all sides of the triangles will be equal.
All sides therefore equal 5.
5+5+5+5 = 20
Example Question #1311 : Concepts
A square has a length of . What is the perimeter in inches?
The square perimeter is the side length.
Substitute and multiply to find the perimeter.
There are in
Multiply the perimeter with .
Example Question #131 : Quadrilaterals
Give the perimeter of the above rectangle in centimeters, using the conversion factor centimeters per yard.
The perimeter of the rectangle is yards. To convert this to centimeters, multiply by the given conversion factor:
centimeters.
Example Question #1321 : Concepts
Find the perimeter of a rectange with length 9 and width 4.
To solve, simply use the formula for the perimeter of a rectangle.
Given the length of the rectangle is 9 and the width is 4; substitute these values into the perimeter equation.
Thus,
Example Question #1913 : Hspt Mathematics
A square has perimeter 20. Which of the following gives 75% of the length of one of its diagonals?
The length of one side of a square is one-fourth of its perimeter, which here makes its length
.
The length of a diagonal of a square is times this sidelength, so the square has diagonals of length .
75% of this is
.
Example Question #1322 : Concepts
A circle has radius 8. Which of the following gives 60% of the circumference of this circle?
The circumference of a circle is its radius mulitplied by . The radius is 8, so the circumference is
.
60% of this is
Example Question #1323 : Concepts
Note: Figure NOT drawn to scale.
The above rectangle has area 18. Give its perimeter.
The product of the length and the width of a rectangle is its area, so to find the length, divide the area by the width:
We can use and to find the perimeter by adding each of these twice:
Example Question #1324 : Concepts
A circle has area . Give its circumference.
The area of a circle, given its radius , is
Set to find the radius.
Multiply this radius by to find the circumference:
Example Question #1325 : Concepts
The above rectangle has area 100. Give its perimeter in terms of .
The width of a rectangle is the quotient of its area and its length, which are 100 and , respectively. Therefore, the width is . The four sides measure , , , and ; the perimeter is their sum, which is
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