# Circumference 43531

A triangle with a circumference of 69 cm has one side three times shorter than the longest of them and the other 3 cm shorter than the longest of them. Find the area of the triangle.

## Correct answer:

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### You need to know the following knowledge to solve this word math problem:

**algebra**- equation
- system of equations
**arithmetic**- square root
**planimetrics**- area of a shape
- perimeter
- triangle
- Heron's formula

### Units of physical quantities:

### Grade of the word problem:

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