All Basic Geometry Resources
Example Questions
Example Question #478 : Triangles
The diameter of the circle is , what is the area of the shaded region?
To find the area of the shaded region, we will first need to find the area of the right triangle and the area of the circle.
Recall how to find the area of a circle:
Now, recall how to find the length of the radius from the length of the diameter.
Substitute in the given diameter to find the radius.
Now, substitute in the radius to find the area of the circle.
Next, recall how to find the area of a right triangle.
Substitute in the given base and height to find the area.
We can now find the area of the shaded region:
Solve and round to two decimal places.
Example Question #281 : Right Triangles
The diameter of the circle is , what is the area of the shaded region?
To find the area of the shaded region, we will first need to find the area of the right triangle and the area of the circle.
Recall how to find the area of a circle:
Now, recall how to find the length of the radius from the length of the diameter.
Substitute in the given diameter to find the radius.
Now, substitute in the radius to find the area of the circle.
Next, recall how to find the area of a right triangle.
Substitute in the given base and height to find the area.
We can now find the area of the shaded region:
Solve and round to two decimal places.
Example Question #81 : How To Find The Area Of A Right Triangle
The diameter of the circle is , what is the area of the shaded region?
To find the area of the shaded region, we will first need to find the area of the right triangle and the area of the circle.
Recall how to find the area of a circle:
Now, recall how to find the length of the radius from the length of the diameter.
Substitute in the given diameter to find the radius.
Now, substitute in the radius to find the area of the circle.
Next, recall how to find the area of a right triangle.
Substitute in the given base and height to find the area.
We can now find the area of the shaded region:
Solve and round to two decimal places.
Example Question #81 : How To Find The Area Of A Right Triangle
The diameter of the circle is , find the area of the shaded region.
To find the area of the shaded region, we will first need to find the area of the right triangle and the area of the circle.
Recall how to find the area of a circle:
Now, recall how to find the length of the radius from the length of the diameter.
Substitute in the given diameter to find the radius.
Now, substitute in the radius to find the area of the circle.
Next, recall how to find the area of a right triangle.
Substitute in the given base and height to find the area.
We can now find the area of the shaded region:
Solve and round to two decimal places.
Example Question #82 : How To Find The Area Of A Right Triangle
The diameter of the circle is , find the area of the shaded region.
To find the area of the shaded region, we will first need to find the area of the right triangle and the area of the circle.
Recall how to find the area of a circle:
Now, recall how to find the length of the radius from the length of the diameter.
Substitute in the given diameter to find the radius.
Now, substitute in the radius to find the area of the circle.
Next, recall how to find the area of a right triangle.
Substitute in the given base and height to find the area.
We can now find the area of the shaded region:
Solve and round to two decimal places.
Example Question #84 : How To Find The Area Of A Right Triangle
The diameter of the circle is , find the area of the shaded region.
To find the area of the shaded region, we will first need to find the area of the right triangle and the area of the circle.
Recall how to find the area of a circle:
Now, recall how to find the length of the radius from the length of the diameter.
Substitute in the given diameter to find the radius.
Now, substitute in the radius to find the area of the circle.
Next, recall how to find the area of a right triangle.
Substitute in the given base and height to find the area.
We can now find the area of the shaded region:
Solve and round to two decimal places.
Example Question #1461 : Plane Geometry
A triangle has a height of 5 inches and a base of 10 inches. What is the area of this triangle?
None of these.
The area of a right triangle can be found by .
Example Question #82 : How To Find The Area Of A Right Triangle
Triangle ABC has the given side lengths. Find the area of triangle ABC.
Imagine a right triangle as a square cut in half at a diagonal angle.
When figuring out the area, you figure it out the same way as finding the area of a square, but after multiplying length x width, divide the answer by 2.
Example Question #87 : How To Find The Area Of A Right Triangle
Find the area, , of a right triangle whose sides are , , .
The formula for the area of a right triangle is
.
Plugging in the values given,
.
Example Question #84 : How To Find The Area Of A Right Triangle
In the right triangle shown here, and . What is its area in square units?
The area of a right triangle is given by , where represents the length of the triangle's base and represents the length of the triangle's height. The base and the height of the triangle given in the problem are and units long, respectively. Hence, the area of the triangle can be calculated as follows:
.
Hence, the area of a right triangle with base length units and height units is square units.
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