Lesson Example Discussion Quiz: Class Homework |
Step-2 |
Title: Volume |
Grade: 6-a Lesson: S2-L7 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
If the height of a given cone is 21 ft and the diameter of the circular base is 12 ft. Then find its volume. |
|
2 |
Step |
The given values are |
h = 21 ft , d =12 ft |
3 |
Formula: |
The volume of cone is |
\$ V=1/3 π r^2 h\$ |
4 |
Hint |
\$r = d/2\$ |
\$r = 12/2\$ |
5 |
Step |
Now substitute the values |
\$V = 1/3 times π times (6)^2 times 21\$ |
6 |
Step |
After simplification |
\$V = 1/3 times 3.1415 times (36) times 21\$ |
7 |
Step |
After simplification |
\$V = 2374.974 /3\$ |
8 |
Step |
After simplification |
V = 791.65 cu.ft |
9 |
Step |
The volume of a cone is 791.65 cu.ft |
|
10 |
Sumup |
Can you summarize what you’ve understood in the above steps? |
|
11 |
Choice.A |
This is wrong because the measurements use different units. Use units for height, not volume |
791 ft |
12 |
Choice.B |
This is not correct because it does not match the calculated volume |
791.56 cu.ft |
13 |
Choice.C |
This is not correct because it does not match the calculated volume |
790 cu.ft |
14 |
Choice.D |
This is correct because it match the calculated volume |
791.65 cu.ft |
15 |
Answer |
Option |
D |
16 |
Sumup |
Can you summarize what you’ve understood in the above steps? |
|
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