All Basic Geometry Resources
Example Questions
Example Question #1 : How To Find The Area Of A Square
Point A is the center of the circle.
Figure ABCD is a square.
Segments AB and AD are radii of the circle.
The radius of the circle is units.
Find the area of the green-colored shape.
Square ABCD contains both the red and green shapes. The red shape is equal to the area of one-fourth of the circle. Finding the area of square ABCD and subtracting only the area of the red shape will give the area of only the green shape.
Since ABCD is a square, angle BAC is a right angle that sits at the center of the circle (point A). Since a right angle is 90o and a circle is 360o, the red shape's area must be one quarter (or ) of the entire circle's area. Use the equation to find the area of the entire circle, then multiply this by to find the area of only the red shape.
Subtracting this from the area of the square gives the area of the green area outside of the circle.
Example Question #281 : Quadrilaterals
4
5
1
2
3
4
Example Question #31 : Squares
One side of a square is 6 inches long. What is the area of the square in inches?
To find the area of a square, you only need to know one side. The length of one side squared is the area.
Example Question #2 : How To Find The Area Of A Square
Side in the square shown below has a length of 13 meters. What is the total area of the square?
Since the shape in question is a square, we know that is the length of all four sides.
The formula for the area of a square is .
In this case, area = , or . Plug in the given value of a, 13 meters, to solve for the area:
Remember to use the correct units, in this square meters.
Example Question #33 : Squares
Find the area of a square that has side lengths of mm.
The area of any square is: , so
Example Question #34 : Squares
How much more area does a square with a side of 2r have than a circle with a radius r? Approximate π by using 22/7.
4/7 square units
6/7 square units
1/7 square units
12/14 square units
6/7 square units
The area of a circle is given by A = πr2 or 22/7r2
The area of a square is given by A = s2 or (2r)2 = 4r2
Then subtract the area of the circle from the area of the square and get 6/7 square units.
Example Question #91 : Quadrilaterals
If the perimeter of a square is 44 centimeters, what is the area of the square in square centimeters?
Since the square's perimeter is 44, then each side is .
Then in order to find the area, use the definition that the
Example Question #391 : Act Math
Given square , with midpoints on each side connected to form a new, smaller square. How many times bigger is the area of the larger square than the smaller square?
Assume that the length of each midpoint is 1. This means that the length of each side of the large square is 2, so the area of the larger square is 4 square units.
To find the area of the smaller square, first find the length of each side. Because the length of each midpoint is 1, each side of the smaller square is (use either the Pythagorean Theorem or notice that these right trianges are isoceles right trianges, so can be used).
The area then of the smaller square is 2 square units.
Comparing the area of the two squares, the larger square is 2 times larger than the smaller square.
Example Question #92 : Quadrilaterals
If a completely fenced-in square-shaped yard requires 140 feet of fence, what is the area, in square feet, of the lot?
35
70
4900
140
1225
1225
Since the yard is square in shape, we can divide the perimeter(140ft) by 4, giving us 35ft for each side. We then square 35 to give us the area, 1225 feet.
Example Question #391 : Act Math
Eric has 160 feet of fence for a parking lot he manages. If he is using all of the fencing, what is the area of the lot assuming it is square?
The area of a square is equal to its length times its width, so we need to figure out how long each side of the parking lot is. Since a square has four sides we calculate each side by dividing its perimeter by four.
Each side of the square lot will use 40 feet of fence.
.
Certified Tutor
Certified Tutor