# Perimeter

 Site: Saylor Academy Course: GKT101: General Knowledge for Teachers – Math Book: Perimeter
 Printed by: Guest user Date: Sunday, August 4, 2024, 7:17 AM

## Description

Watch this lecture series introducing the perimeter, and complete the interactive exercises to practice calculating the perimeter of rectangles.

## Practice

### Find perimeter by counting units - Questions

1. Each square on the grid is 1 unit square.

What is the perimeter of the shaded rectangle?

________ units

2. Each square on the grid is 1 unit square.

What is the perimeter of the shaded figure?

________ units

3. Each square on the grid is 1 unit square.

What is the perimeter of the shaded square?

________ units

4. Each square on the grid is 1 unit square.

What is the perimeter of the shaded square?

________ units

### Find perimeter by counting units - Answers

1. The perimeter is $16$ units.

2. The perimeter is $18$ units.

3. The perimeter is $20$ units.

4. The perimeter is $34$ units.

### Find perimeter when given side lengths - Questions

1. What is the perimeter of the figure?

_______ cm

2. What is the perimeter of the quadrilateral?

_______ meters

3. One side of a rectangle is $8$ units. Another side is $5$ units.

What is the perimeter of the rectangle?

_______ units

4. Which of the following expressions can be used to find the perimeter of the rectangle?

(A) $2 \times(11+17)$

(B) $17+17 \times 2$

(C) $11+11+17+17$

(D) $11 \times 17$

5. What is the perimeter of the rectangle?

_______ meters

6. The length of each side of the star is 8 units.

What is the perimeter of the star?

_______ units

7.  One side of a regular triangle is 5 units.

What is the perimeter of the triangle?

_______ units

### Find perimeter when given side lengths - Answers

1. The perimeter of the figure is $48$ centimeters.

2. The perimeter of the quadrilateral is $32$ centimeters.

3. The perimeter of the rectangle is $26$ centimeters.

4. We can find the perimeter either by adding the lengths of all four sides:

$11+11+17+17$

Or by multiplying 2 by $11+17$:

$2 \times(11+17)$

5. The perimeter of the rectangle is $98$ meters.

6. The perimeter is $80$ units.

7.  The perimeter of the regular triangle is $15$ units.