Question

the length of two sides of a triangle is 5cmand7cm longer than the third side.if the perimeter is 21cm find the third side...​

Answer 1

Answer:

Infinitely many triangles can have two sides 5 and 7. The third side must be bigger than 2 and smaller than 12.

Note: 2=7–5 and 12=7+5. Use triangle inequality.

Note 2: original question that I answered is in bold at the top of my answer. The question it got merged into has 7.5 cm instead of 7 cm

Step-by-step explanation:

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