Basic Geometry : Plane Geometry

Study concepts, example questions & explanations for Basic Geometry

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Example Questions

Example Question #191 : Quadrilaterals

If the perimeter of a rectangle is , and the width of the rectangle is , what is the area of the rectangle?

Possible Answers:

Correct answer:

Explanation:

Recall how to find the perimeter of a rectangle:

Since we are given the width and the perimeter, we can solve for the length.

Substitute in the given values for the width and perimeter to find the length.

Simplify.

Solve.

Now, recall how to find the area of a rectangle.

Substitute in the values of the length and width to find the area.

Solve.

Example Question #602 : Plane Geometry

If the perimeter of a rectangle is , and the width of the rectangle is , what is the area of the rectangle?

Possible Answers:

Correct answer:

Explanation:

Recall how to find the perimeter of a rectangle:

Since we are given the width and the perimeter, we can solve for the length.

Substitute in the given values for the width and perimeter to find the length.

Simplify.

Solve.

Now, recall how to find the area of a rectangle.

Substitute in the values of the length and width to find the area.

Solve.

Example Question #603 : Plane Geometry

If the perimeter of a rectangle is , and the width of the rectangle is , what is the area of the rectangle?

Possible Answers:

Correct answer:

Explanation:

Recall how to find the perimeter of a rectangle:

Since we are given the width and the perimeter, we can solve for the length.

Substitute in the given values for the width and perimeter to find the length.

Simplify.

Solve.

Now, recall how to find the area of a rectangle.

Substitute in the values of the length and width to find the area.

Solve.

Example Question #604 : Plane Geometry

If the perimeter of a rectangle is , and the width of the rectangle is , what is the area of the rectangle?

Possible Answers:

Correct answer:

Explanation:

Recall how to find the perimeter of a rectangle:

Since we are given the width and the perimeter, we can solve for the length.

Substitute in the given values for the width and perimeter to find the length.

Simplify.

Solve.

Now, recall how to find the area of a rectangle.

Substitute in the values of the length and width to find the area.

Solve.

Example Question #51 : How To Find The Area Of A Rectangle

If the perimeter of a rectangle is , and the width of the rectangle is , what is the area of the rectangle?

Possible Answers:

Correct answer:

Explanation:

Recall how to find the perimeter of a rectangle:

Since we are given the width and the perimeter, we can solve for the length.

Substitute in the given values for the width and perimeter to find the length.

Simplify.

Solve.

Now, recall how to find the area of a rectangle.

Substitute in the values of the length and width to find the area.

Solve.

Example Question #602 : Plane Geometry

If the perimeter of a rectangle is , and the width of the rectangle is , what is the area of the rectangle?

Possible Answers:

Correct answer:

Explanation:

Recall how to find the perimeter of a rectangle:

Since we are given the width and the perimeter, we can solve for the length.

Substitute in the given values for the width and perimeter to find the length.

Simplify.

Solve.

Now, recall how to find the area of a rectangle.

Substitute in the values of the length and width to find the area.

Solve.

Example Question #53 : How To Find The Area Of A Rectangle

If the perimeter of a rectangle is , and the width of the rectangle is , what is the area of the rectangle?

Possible Answers:

Correct answer:

Explanation:

Recall how to find the perimeter of a rectangle:

Since we are given the width and the perimeter, we can solve for the length.

Substitute in the given values for the width and perimeter to find the length.

Simplify.

Solve.

Now, recall how to find the area of a rectangle.

Substitute in the values of the length and width to find the area.

Solve.

Example Question #54 : How To Find The Area Of A Rectangle

If the perimeter of a rectangle is , and the width of the rectangle is , what is the area of the rectangle?

Possible Answers:

Correct answer:

Explanation:

Recall how to find the perimeter of a rectangle:

Since we are given the width and the perimeter, we can solve for the length.

Substitute in the given values for the width and perimeter to find the length.

Simplify.

Solve.

Now, recall how to find the area of a rectangle.

Substitute in the values of the length and width to find the area.

Solve.

Example Question #51 : How To Find The Area Of A Rectangle

A rectangle has a width of , and a lenth of . Find the perimeter. 

Possible Answers:

Correct answer:

Explanation:

To find perimeter, you add the sides of the rectangle together. In this case, that would be:

Example Question #51 : How To Find The Area Of A Rectangle

Find the area of a rectangle given length 7 and width 8.

Possible Answers:

Correct answer:

Explanation:

To solve, simply use the formulaf or the area of a rectangle. Thus,

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