Question

find third side of triangle if one side is 12 and second is 9​

Answer 1

Answer:

check down

Step-by-step explanation:

The one side of triangle is12cm

the second side is 9cm

So the third side is:-

c²=a²+b²

c²=12²+9²

c²=144+81

c²=225

c=15cm

So the third side of triangle is 15cm .

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Answer 2

Answer:

find third side of triangle if one side is 12 and second is 9

Since, the sum of lengths of any two sides in a triangle should be greater than the length of the third side.

It is given that two sides of triangle are 12cm and 15cm.

Therefore, the third side should be less than 12+15=27cm.

And also the third side cannot be less than the difference of the two sides.

Therefore, the third side has to be more than 15−12=3cm

Therefore, the third side should be the length more than 3cm and less than 27cm.

therefore, 3cm< 3rd side <27cm