This handy Math in Focus Grade 4 Workbook Answer Key Chapter 12 Practice 2 Rectangles and Squares detailed solutions for the textbook questions.

## Math in Focus Grade 4 Chapter 12 Practice 2 Answer Key Rectangles and Squares

**Find the perimeter of each figure.**

**Example**

Perimeter of rectangle

= 7 + 4 + 7 + 4

= 22 cm

The perimeter of the rectangle is 22 centimeters.

Question 1.

Perimeter of square = 4 × ___________

= _________ in.

The perimeter of the square is ___________inches.

Answer:

In square all four sides are equal.

Perimeter of square = 4 × **6 in**

= **24 in**.

The perimeter of the square is **24 inches**.

**Solve. Show your work.**

**Example**

The perimeter of a square flower garden is 20 feet. Find the length of one side of the flower garden.

Length of one side = perimeter ÷ 4

= 20 ÷ 4

= 5 ft

The length of one side of the flower garden so 5 feet.

Question 2.

The perimeter of a square building is 160 yards. Find the length of one side of the building.

Answer:

Perimeter = 160 yards

Length of one side = perimeter ÷ 4

= 160 yards ÷ 4

= 40 yards

The length of one side of the building is **40 yards**.

**Solve. Show your work.**

Question 3.

A square field has a perimeter of 44 meters. Find the length of one side of the field.

Answer:

Perimeter = 44 m

Length of one side = perimeter ÷ 4

= 44 m ÷ 4

= 11 m

The length of one side of the field is **11 m**.

Question 4.

The perimeter of a rectangular town is 32 miles. Its width is 5 miles. Find the length.

Answer:

From the above image we can have a data of width and perimeter.

Length = ?

**width = 5 mi**

**perimeter = 32 mi**

Perimeter of the rectangular town = length + width + length + width

32 mi = l + 5 mi + l + 5 mi

32 mi = 2l + 10 mi

32 mi – 10 mi = 2l

22 mi = 2l

11 mi = l

The length of the rectangular town is** 11 miles**.

**Solve. Show your work.**

Question 5.

The perimeter of a rectangle is 24 centimeters. Its length is 9 centimeters. Find the width.

Answer:

From the above image we can have a data of length and perimeter.

**Length = 9 cm**

**width = ?**

**perimeter = 24 cm**

Perimeter of the rectangle = length + width + length + width

24 cm = 9 cm + w + 9 cm + w

24 cm= 18 cm + 2w

24 cm – 18 cm = 2w

6 cm = 2w

**3 cm = w**

The width of the rectangle is** 3 cm.**

Question 6.

The perimeter of a rectangular garden is 18 yards. Its length is 6 yards. Find the width.

Answer:

From the above image we can have a data of length and perimeter.

**Length = 6 yards**

**width = ?**

**perimeter = 18 yards**

Perimeter of the rectangular garden = length + width + length + width

18 yards = 6 yards + w + 6 yards + w

18 yards = 12 yards + 2w

18 yards – 12 yards = 2w

6 yards = 2w

**3 yards = w**

The width of the rectangular garden is** 3 yards.**