Lesson Example Discussion Quiz: Class Homework |
Step-2 |
Title: Area of 3D shapes |
Grade: 8-a Lesson: S3-L6 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
Work out the surface area of this cuboid. |
|
2 |
Step |
Given that the height (h) is the width (w) is , the length (l) is |
6 m 4 m 5 m |
3 |
Formula: |
The formula for the surface area of a cuboid with height "h," width "w," and length "l" is |
Area = 2(lw + lh + wh) |
4 |
Step |
Substitute the values into the formula |
A = \$2(5 times 4 + 5 times 6 + 4 times 6)\$ A = 2(20 + 30 + 24) A = 148 |
5 |
Step |
So, the surface area of this cuboid is \$148\$ sq.units |
|
6 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
7 |
Choice.A |
This is not the correct result of the surface area calculation for the given dimensions |
\$128\$ sq.units |
8 |
Choice.B |
The option is correct because it accurately represents the calculated surface area for the cuboid dimensions |
\$148\$ sq.units |
9 |
Choice.C |
This is not the correct result of the surface area calculation for the given dimensions |
\$115\$ meters |
10 |
Choice.D |
This is not the correct result of the surface area calculation for the given dimensions |
\$110\$ sq.meters |
11 |
Answer |
Option |
B |
12 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
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