Lesson Example Discussion Quiz: Class Homework |
Step-1 |
Title: Surface area for Prism & Sphere |
Grade: 6-a Lesson: S3-L3 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
Calculate the radius of a sphere. If the surface area of a sphere is 456 sq.m. |
|
2 |
Step |
The given values is |
Surfacea area = 456 sq.m |
3 |
Formula |
The surface area of a sphere is |
\$"A" = 4π("r")^2\$ |
4 |
Hint |
Now rearrange the formula to solve for the radius "r" |
\$"r" = \sqrt("A"/(4π))\$ |
5 |
Step |
Now plug the values in formula |
\$"r" = \sqrt(456/(4π))\$ |
6 |
Step |
After simplification |
\$"r" = \sqrt(36.305)\$ |
7 |
Step |
Make it simpler |
r = 6.02 m |
8 |
Step |
So, the radius of the sphere is 6.02 m. |
|
9 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
10 |
Choice.A |
This is wrong due to a miscalculation by using the formula |
6.20 m |
11 |
Choice.B |
This is wrong due to a miscalculation by using the formula |
2.60 m |
12 |
Choice.C |
This is correct due to accurately done the calculation bu using formula |
6.02 m |
13 |
Choice.D |
This is wrong due to a miscalculation by using the formula |
2.06 m |
14 |
Answer |
Option |
C |
15 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
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