Question

28. Two sides of a A is a 20cm, 30cm & its area 180cm 2.Find 3rd side?
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Answer 1

=First side A=20cm

=Second side =30cm

=Let the third side be x

=A+B+C=180

=20+30+C=180

=50+C=180

=C=180 - 50

=C=130

Therefore,the 3rd side be 130

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