Lesson Example Discussion Quiz: Class Homework |
Step-4 |
Title: Perimeter of Triangle |
Grade: 6-a Lesson: S1-L7 |
Explanation: Hello Students, time to practice and review the steps for the problem. |
Lesson Steps
Step | Type | Explanation | Answer |
---|---|---|---|
1 |
Problem |
The perimeter of an equilateral triangle is 45 meters. The length of each side was reduced by half. What is the resultant length of the perimeter? |
|
2 |
Step |
The perimeter of an equilateral triangle is given,(P) |
45 meters |
3 |
Formula |
Perimeter of an equilateral triangle |
P = 3a |
4 |
Step |
Now, we have to find the sides of an equilateral triangle substitute the values |
45 = 3a |
5 |
Step |
Divide 3 on both sides |
\$45/3\$ = \$(3a)/3\$ |
6 |
Step |
After cancellation, the length of each side is |
a = 15 mtrs |
7 |
Step |
Now, we have to reduce the original side length by half to find out new side length |
Side_new = \$"side_orginal"/2\$ side_new = \$15/2\$ ⇒ 7.5 |
8 |
Step |
Perimeter of an equilateral triangle for new side length |
P_new = 3a P_new = 3 * 7.5 ⇒ 22.5 |
9 |
Step |
The perimeter for the new equilateral triangle is 22.5 cm. |
|
10 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
|
11 |
Choice.A |
The option differs from the correct answer, making it an inaccurate choice in the comparison |
22.5 meters |
12 |
Choice.B |
The option is equivalent to the answer, making it the correct choice in this comparison |
22.1 meters |
13 |
Choice.C |
The option is equivalent to the answer, making it the correct choice in this comparison |
23.5 meters |
14 |
Choice.D |
The option is equivalent to the answer, making it the correct choice in this comparison |
21.2 meters |
15 |
Answer |
Option |
A |
16 |
SumUp |
Can you summarize what you’ve understood in the above steps? |
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