Lesson Example Discussion Quiz: Class Homework |
Step-3 |
Title: Triangles |
Grade: 8-a Lesson: S4-L1 |
Explanation: Let us verify the answer here with the steps. |
Description:
| Step | Type | Explanation | Answer |
|---|---|---|---|
1 |
Problem |
The perimeter of an equilateral triangle is equal to 270 cm. What is the length of one side of this triangle? |
|
2 |
Hint |
Formula used |
\$"Perimeter" = "side" + "side" + "hypotenuse"\$ |
3 |
Step |
The perimeter of an equilateral triangle |
270 cm |
4 |
Step |
Let x be the length of one side of an equilateral triangle, then its perimeter is equal to 3x |
|
5 |
Step |
Then, |
\$\cancel3^1x = \cancel(270)^90\$ \$x = 90\$ |
6 |
Step |
Hence, the length of one side of this triangle is |
90 cm. |
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