Lesson Example Discussion Quiz: Class Homework |
Step-1 |
Title: Area of 2D-shapes |
Grade: 1400-a Lesson: S3-L5 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
Find the length of the rectangle whose area is \$45(cm)^2\$ and width is 5 cm. |
|
2 |
Step |
Given the area of rectangle is width is |
\$45(cm)^2\$ \$5\$ cm |
3 |
Formula: |
The formula for calculating the area of a rectangle is |
Area (a) = \$"Length"("l") \times "width"("w") \$ |
4 |
Formula: |
we can rearrange the formula to solve for the length |
Length = \$("Area") / ("Width")\$ |
5 |
Step |
To find the value of l, substitute the given values into the formula |
\$"L" = 45/5\$ cm \$"L" = 9\$ cm |
6 |
Step |
So, the length of the rectangle is \$9\$ cm |
|
7 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
8 |
Choice.A |
Incorrect. The problem is in cm, not m. The length calculated is 9 cm, not 90 |
|
9 |
Choice.B |
Correctly represents the length of the rectangle in centimeters, consistent with the given information and the unit of the width |
9 cm |
10 |
Choice.C |
Incorrect units - problem specifies cm, not m |
9 m |
11 |
Choice.D |
The length calculated is incorrect because it is 9 cm, not 99 cm |
99 cm |
12 |
Answer |
Option |
B |
13 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
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