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Question
The table given below contains some measures of the triangle. Find the unknown values.
| Side 1 | Side 2 | Side 3 | Perimeter |
| ? | 8 m | 3 m | 17 m |
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Solution
Perimeter of a triangle = sum of three sides
Perimeter = (side 1 + side 2 + side 3) m
17 = (side 1 + 8 + 3) m
17 m = (side 1 + 11) m
side 1 = 17 – 11
= 6 m
Tabulating the unknowns.
| Side 1 | Side 2 | Side 3 | Perimeter |
| 6 m | 8 m | 3 m | 17 m |
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