The length of the broken line of three links is 370cm. Find the length of the third link of the polyline
| April 11, 2021 | education
The length of the broken line of three links is 370cm. Find the length of the third link of the polyline if the length of the first link is 15 dm, and the length of the second link is one-fifth of the length of the first link?
Let us express the length of the first link in cm:
15 dm = 150 cm.
1) Find the length of the second link:
150: 5 = 30 (cm) – the length of the second link of the broken line.
2) Find the length of the third link. To do this, subtract the length of the first and second links from the total length of the broken line:
370 – 150 – 30 = 190 (cm) – the length of the third link.
Answer: the length of the third link of the broken line is 190 cm.
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