Lesson Example Discussion Quiz: Class Homework |
Step-5 |
Title: Surface Area of Pyramid |
Grade: 4-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 |
Find the lateral surface area of a pyramid with a side length of 10 meters and a lateral height of 7 meters. |
|
2 |
Step |
The given values are |
L = 10 m and h = 7 m |
3 |
Formula |
The lateral surface area (LSA) of a pyramid can be calculated using the formula |
\$"LSA" = 1 /2 times "Perimeter of the base" times "Slant height"\$ |
4 |
Hint |
Perimeter = 4s |
|
5 |
Formula |
Now plug the value in the formula |
\$"LSA" = 1/2 times 4 times 10 times 7\$ \$"LSA" = 280/2 \$ \$"LSA" = 140\$ |
6 |
Step |
Therefore, the lateral surface area of the pyramid is 140 square meters. |
|
7 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
8 |
Choice.A |
This answer isn’t right for finding the side area of the pyramid |
130 sq.m |
9 |
Choice.B |
This answer accurately calculates the lateral surface area of the given pyramid |
140 sq.m |
10 |
Choice.C |
This answer isn’t right for finding the side area of the pyramid |
150 sq.m |
11 |
Choice.D |
This answer isn’t right for finding the side area of the pyramid |
190 sq.m |
12 |
Answer |
Option |
B |
13 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
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