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cheaterman1616
23.02.2021 •
Mathematics
A triangle has a perimeter of 280 cm, and its side lengths are a, b and c respectively. If a:b= 2:3, b:c=4:5, find the length of each side of the triangle.
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Ответ:
The length of the sides are 64 cm, 96 cm and 120 cm.
Step-by-step explanation:
Perimeter of a triangle:
The perimeter of a triangle is the sum of it's sides.
A triangle has a perimeter of 280 cm, and its side lengths are a, b and c respectively.
This means that:
a:b= 2:3
This means that:
b:c=4:5
This means that:
At the original equation:
We replace b and c in function of a. So
Multiplying everything by 8
Sides b and c:
Since we have a, we can find sides b and c:
The length of the sides are 64 cm, 96 cm and 120 cm.
Ответ: