Answers

2015-03-14T11:36:58+05:30
Look into the pic given below...hope it helpz...
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2015-03-14T13:57:01+05:30
LET A CIRCLE PASS THROUGH ABC SO WE GET ABC AS RIGHT ANGLE TRIANGLE AND ANGLE ABC IS RIGHT ANGLE THEN AC IS DIAMETER OF CIRCLE AS IT FORMS SEMICIRCLE AND ANGLE IN SEMICIRCLE = 90 DEGREES 
BY PYTHAGORAS THEOREM 
AC=20 
SO RADIUS = 10 CM
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