Question

3. The sum of three sides of a triangle is 13 whole1/5 m. If the sum of its two sides is 7whole1/10
lo m, find the length of
the third side.
​

Answer 1

Answer:

The sum of two sides of a triangle is greater than the third side.

We have to prove that : QP + PR > QR.

Proof:

Note: similarly we can proved, QP + QR > PR or PR + QR > QP.

Step-by-step explanation:

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Answer 2

Answer:

6 while 1/10

Step-by-step explanation:

Total sum=13 whole 1/5

Sum of 2 sides = 7 whole 1/10

Third side= 13 whole 1/5- 7 whole1/10

66/5-71/10

132-71/10

61/10=6 whole 1/10