Solving Exercise 4 on Page 31 of Math 5 Workbook

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Ngày cập nhật gần nhất: 1/5/2026

Solving Exercise 4 on Page 31 of Math 5 Workbook in Concentrated Practice: Calculating the area of a cover with dimensions as shown below

Guidance for Solving Exercise 4 on Page 31 of Math 5 Workbook

A. 96 square centimeters
B. 192 square centimeters
C. 224 square centimeters
D. 288 square centimeters

Solution Method:

* Observation:
- The area of the cover equals the area of rectangle MNPQ minus the area of square EGHK

Answer:
The length of rectangle MNPQ is:
8 + 8 + 8 = 24 (cm)
The area of rectangle MNPQ is:
24 x 12 = 288 (cm²)
The area of square EGHK is:
8 x 8 = 64 (cm²)
The area of the cover is:
288 - 64 = 224 (cm²)
Circle C as the answer.

Here is the guide to solve Exercise 4 on page 31 of Math 5 Workbook. Additionally, this section includes 3 more exercises which are Solving Exercise 1 on page 31 of Math 5 Workbook, Solving Exercise 2 on page 31 of Math 5 Workbook, and Solving Exercise 3 on page 31 of Math 5 Workbook. Let's check out the guide to solving exercises on page 31 of Math 5 to excel in 5th-grade math.

Frequently Asked Questions

What is the method for calculating the area of a cover?

To calculate the area of a cover, subtract the area of square EGHK from the area of rectangle MNPQ. This approach provides an accurate measurement of the desired area.

How do you determine the dimensions of rectangle MNPQ?

The dimensions of rectangle MNPQ can be determined by adding the lengths of its sides. For this problem, the length is 24 cm, calculated as 8 cm plus 8 cm plus 8 cm.

What is the final area of the cover calculated?

The final area of the cover is 224 square centimeters. This is derived from subtracting the area of square EGHK, which is 64 cm², from the area of rectangle MNPQ, which is 288 cm².

What are the key exercises included in this section?

This section includes three additional exercises alongside Exercise 4, specifically Solving Exercise 1, Exercise 2, and Exercise 3, all found on page 31 of the Math 5 Workbook.

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