High School Math : How to find the area of a triangle in pre-algebra

Study concepts, example questions & explanations for High School Math

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Example Questions

Example Question #721 : High School Math

What is the area of a triangle with a base of  and a height of ?

Possible Answers:

Correct answer:

Explanation:

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 .

Example Question #1 : How To Find The Area Of A Triangle In Pre Algebra

What is the area of a triangle with a base of  and a height of ?

Possible Answers:

Correct answer:

Explanation:

The formula for the area of a triangle is half of the base times the height: 

Plug in our given information and solve:

Example Question #1 : How To Find The Area Of A Triangle In Pre Algebra

If a triangle has an area of  and a base of , what is the height?

Possible Answers:

Correct answer:

Explanation:

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 :

Example Question #4 : How To Find The Area Of A Triangle In Pre Algebra

What is the area of a triangle with a base of  and a height of ?

Possible Answers:

Correct answer:

Explanation:

The formula for the area of a triangle is .

Plug in our given values.

Example Question #5 : How To Find The Area Of A Triangle In Pre Algebra

What is the area of a triangle with a base of  and a height of ?

Possible Answers:

Correct answer:

Explanation:

The formula for the area of a triangle is .

Plug in our given values.

 

Example Question #6 : How To Find The Area Of A Triangle In Pre Algebra

What is the base of a triangle if the height is  and the area is ?

Possible Answers:

Correct answer:

Explanation:

The formula for the area of a triangle is .

Plug in our given values.

Combine like terms.

Divide both sides by  to isolate .

Example Question #7 : How To Find The Area Of A Triangle In Pre Algebra

What is the area of a triangle with a base of  and a height of ?

Possible Answers:

Correct answer:

Explanation:

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 .

Example Question #8 : How To Find The Area Of A Triangle In Pre Algebra

What is the area of a triangle with a base of and a height of ?

Possible Answers:

Correct answer:

Explanation:

The formula for the area of a triangle is .

Plug in our given values and solve.

Example Question #9 : How To Find The Area Of A Triangle In Pre Algebra

What is the area of a triangle with a base of  and a height of ?

Possible Answers:

Correct answer:

Explanation:

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 .

Example Question #10 : How To Find The Area Of A Triangle In Pre Algebra

What is the area of a triangle with a base of  and a height of ?

Possible Answers:

Correct answer:

Explanation:

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 .

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