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Lesson Example Discussion Quiz: Class Homework

Step-5

Title: Rectangle

Grade: 8-a Lesson: S2-L8

Explanation: Let us verify the answer here with the steps.

Description:

Explanation	Answer
Problem	What is the area of the blue zone?
Formula used	\$"Area of Rectangle" = "lenght" \times "width"\$
Step - 1	From the image, [AF] = 30m, [DE] = 21m, [FE] = 26m, [AB] = 15m [BC] = [AF] - [DE] = 30m - 21m = 9m [CD] = [FE] - [AB] = 26m - 15m = 11m
Step - 2	The area of blue zone = \$"The area of the rectangle with a lenght 30m and a width of 26m" - "The area of the rectangle with a lenght 11m and a width of 9m "\$
Step - 3	Area = \$(30 \times 26) - (11 \times 9)\$ Area = \$(780) - (99) = 681 m^2\$
Step - 4	Hence,the area of blue zone is \$681 m^2\$

Explanation

Answer

Problem

What is the area of the blue zone?

Formula used

\$"Area of Rectangle" = "lenght" \times "width"\$

Step - 1

From the image, [AF] = 30m, [DE] = 21m, [FE] = 26m, [AB] = 15m

[BC] = [AF] - [DE] = 30m - 21m = 9m

[CD] = [FE] - [AB] = 26m - 15m = 11m

Step - 2

The area of blue zone = \$"The area of the rectangle with a lenght 30m and a width of 26m" - "The area of the rectangle with a lenght 11m and a width of 9m "\$

Step - 3

Area = \$(30 \times 26) - (11 \times 9)\$

Area = \$(780) - (99) = 681 m^2\$

Step - 4

Hence,the area of blue zone is \$681 m^2\$