Answer:
Given
Now
Perimeter = AB+BC+CA
30 = 12+12+CA
30 = 24+CA
30-24 = CA
6= CA
SO
Third side is = 6cm
Ans = 9 root 15
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Verified answer
Answer:
Given
Now
Perimeter = AB+BC+CA
30 = 12+12+CA
30 = 24+CA
30-24 = CA
6= CA
SO
Third side is = 6cm
Now
Ans = 9 root 15