Pre-Algebra : Area of a Triangle

Study concepts, example questions & explanations for Pre-Algebra

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Example Questions

Example Question #81 : Geometry

Given the following measurements of a triangle: base (b) and height (h), find the area. 

Possible Answers:

Correct answer:

Explanation:

The area of triangle is found using the formula

.

Provided with the base and the height, all we need to do is plug in the values and solve for A. 

Since this is asking for the area of a shape, the units are squared.

Thus, our final answer is 

Example Question #82 : Geometry

Given the following measurements of a triangle: base (b) and height (h), find the area. 

Possible Answers:

Correct answer:

Explanation:

The area of triangle is found using the formula

.

Provided with the base and the height, all we need to do is plug in the values and solve for A. 

.

Since this is asking for the area of a shape, the units are squared.

Thus, our final answer is 

 

 

Example Question #83 : Geometry

Given the following measurements of a triangle: base (b) and height (h), find the area. 

Possible Answers:

Correct answer:

Explanation:

The area of triangle is found using the formula

.

Provided with the base and the height, all we need to do is plug in the values and solve for A. 

.

Since this is asking for the area of a shape, the units are squared.

Thus, our final answer is 

 

 

Example Question #11 : Area Of A Triangle

What is the area of an isoceles triangle that has a base length of 18 inches, side lengths of 15 inches and a vertical height of 12 inches?

Possible Answers:

Correct answer:

Explanation:

Area of a triangle is:-    

Area is in Square Units.

Example Question #11 : Area Of A Triangle

The base of the triangle is .  The height of the triangle is .  What is the area of the triangle?

Possible Answers:

Correct answer:

Explanation:

Write the area for a triangle.

Substitute the base and height.

Example Question #91 : Geometry

Find the area of a triangle with a base of  and a height of .

Possible Answers:

Correct answer:

Explanation:

Write the formula for the area of a triangle.

Substitute the base and height.

Example Question #91 : Geometry

What is the area of a right triangle if the hypotenuse is five, and a base leg is four?

Possible Answers:

Correct answer:

Explanation:

Write the area for a right triangle.

The height is unknown.  In order to solve for the height, use the Pythagorean Theorem to find the unknown length.

The height of the triangle is three.  Substitute both leg dimensions to find the area.

Example Question #11 : Area Of A Triangle

Find the area of an equilateral triangle with a perimeter of three.

Possible Answers:

Correct answer:

Explanation:

Write the formula to find the area of an equilateral triangle given the side.

Since all three sides are equal in an equilateral triangle, divide the perimeter by three to obtain the length of one side. The side length is one.

Example Question #11 : Area Of A Triangle

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

Possible Answers:

Correct answer:

Explanation:

Write the formula to find the area of a triangle.

Substitute the base and height.  Simplify the expression.

Example Question #11 : Area Of A Triangle

Find the area of a triangle if the base is  and the height is .

Possible Answers:

Correct answer:

Explanation:

Write the formula to find the area of a triangle.

Substitute the base and height.

From here multiply the monomial term,  to each term within the parentheses. Also, recall the rules of exponents. When like bases are multiplied together their exponents are added.

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