How to find the area of a triangle in pre-algebra - High School Math
Card 0 of 14
Find the area of a triangle with a base of 3 inches and a height of 14 inches.
Find the area of a triangle with a base of 3 inches and a height of 14 inches.
Apply the formula for the area of a triangle: 
A = 3 * 14 * (1/2) = 21
Make sure that your units are squared.
Apply the formula for the area of a triangle:
A = 3 * 14 * (1/2) = 21
Make sure that your units are squared.
Compare your answer with the correct one above
Find the area of a triangle with a base of 16 meters and a height of 4 meters.
Find the area of a triangle with a base of 16 meters and a height of 4 meters.
Area of a triangle = 
= (1/2) * 16 * 4
= 32
Area of a triangle =
= (1/2) * 16 * 4
= 32
Compare your answer with the correct one above
What is the area of this triangle?
What is the area of this triangle?
The area of a triangle can be calculated using this equation 
.
In this question, the base, 
, is 
. The height, 
, is 
.
The area of a triangle can be calculated using this equation
In this question, the base,
Compare your answer with the correct one above
What is the area of a triangle with a base of 
and a height of 
?
What is the area of a triangle with a base of
The equation for the area of a triangle is
We plug the base of 
and the height of 
into the equation to get
We then multiply to get the answer of 
.
The equation for the area of a triangle is
We plug the base of
We then multiply to get the answer of
Compare your answer with the correct one above
What is the area of a triangle with a base of 
and a height of 
?
What is the area of a triangle with a base of
The equation for the area of a triangle is
We plug the base of 
and the height of 
into the equation to get
We then multiply to get the answer of 
.
The equation for the area of a triangle is
We plug the base of
We then multiply to get the answer of
Compare your answer with the correct one above
What is the area of a triangle with a base of 
and a height of 
?
What is the area of a triangle with a base of
The formula for the area of a triangle is half of the base times the height: 
Plug in our given information and solve:
The formula for the area of a triangle is half of the base times the height:
Plug in our given information and solve:
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If a triangle has an area of 
and a base of 
, what is the height?
If a triangle has an area of
The formula for the area of a triangle is half of the base times the height: 
Plug in our given information and solve:
Multiply both sides by 
to get rid of the 
:
Divide both sides by 
:
The formula for the area of a triangle is half of the base times the height:
Plug in our given information and solve:
Multiply both sides by
Divide both sides by
Compare your answer with the correct one above
What is the area of a triangle with a base of 
and a height of 
?
What is the area of a triangle with a base of
The equation for the area of a triangle is 
.
We plug the base of 
and the height of 
into the equation to get 
.
We then multiply to get the answer of 
.
The equation for the area of a triangle is
We plug the base of
We then multiply to get the answer of
Compare your answer with the correct one above
What is the area of a triangle with a base of 
and a height of 
?
What is the area of a triangle with a base of
The formula for the area of a triangle is 
.
Plug in our given values.
The formula for the area of a triangle is
Plug in our given values.
Compare your answer with the correct one above
What is the area of a triangle with a base of 
and a height of 
?
What is the area of a triangle with a base of
The formula for the area of a triangle is 
.
Plug in our given values.
The formula for the area of a triangle is
Plug in our given values.
Compare your answer with the correct one above
What is the base of a triangle if the height is 
and the area is 
?
What is the base of a triangle if the height is
The formula for the area of a triangle is 
.
Plug in our given values.
Combine like terms.
Divide both sides by 
to isolate 
.
The formula for the area of a triangle is
Plug in our given values.
Combine like terms.
Divide both sides by
Compare your answer with the correct one above
What is the area of a triangle with a base of 
and a height of 
?
What is the area of a triangle with a base of
The formula for the area of a triangle is 
.
Plug in our given values and solve.
The formula for the area of a triangle is
Plug in our given values and solve.
Compare your answer with the correct one above
What is the area of a triangle with a base of 
and a height of 
?
What is the area of a triangle with a base of
The equation for the area of a triangle is
We plug the base of 
and the height of 
into the equation to get
We then multiply to get the answer of 
.
The equation for the area of a triangle is
We plug the base of
We then multiply to get the answer of
Compare your answer with the correct one above
What is the area of a triangle with a base of 
and a height of 
?
What is the area of a triangle with a base of
To find the area of a triangle, use the equation:
Substitute the given values for base and height into the equation:
To find the area of a triangle, use the equation:
Substitute the given values for base and height into the equation:
Compare your answer with the correct one above