Geometry

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- Area of a Circle Calculator
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- Center of Mass Calculator
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- Distance Formula Calculator
- Geometry Calculators
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- Isosceles Triangle Theorem
- Perimeter of a Circle
- Perimeter of a Pentagon
- Perimeter of a Rectangle
- Perimeter of a Rhombus
- Perimeter of a Semicircle
- Perimeter of a Square
- Perimeter of a Trapezoid
- Perimeter of a Triangle
- Properties of a Parallelogram
- Pythagorean Theorem Calculator
- Side Angle Side Theorem
- Side Splitter Theorem
- Similar Triangles
- Special Right Triangles
- Surface Area of a Cone
- Surface Area of a Cube
- Surface Area of a Cylinder
- Surface Area of a Hemisphere
- Surface Area of a Pyramid
- Surface Area of a Sphere
- Surface Area of a Triangular Prism
- Triangle Inequality Theorem
- Types of Triangles
- Vertical Angles
- Volume of a Cone
- Volume of a Cube
- Volume of a Hexagonal Prism
- Volume of a Pyramid
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Tutors/teachers:

Nikkolas

Tutor and Aerospace Engineer

# Perimeter of a Rectangle

## Rectangle Perimeter Formula

The formula for perimeter of a rectangle is given as:**P = 2(l + w)**

Where *P* is the perimeter, *l* is the length, and *w* is the width.

### Example Problems

Problem 1:

Find the perimeter of a rectangle with a length of 12 and width of 5.

Solution:

The length and width are given to us. Let’s plug the given dimensions into the formula.

P = 2(l + w) = 2(12 + 5)

P = 2(17) = 34**The perimeter of the rectangle is 34.**

Problem 2:

A rectangle has a perimeter of 15 and a length of 5. What is the width?

Solution:

Let’s plug the given dimensions into the formula, then isolate *w* to find the width.

P = 2(l + w) → 15 = 2(5 + w)

15 = 10 + 2w

5 = 2w

w = 2.5**The width of the rectangle is 2.5.**

Result :

Worksheet 1

Download.pdf

Cheat sheet

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