14.) यदि किसी वृत्त का क्षेत्रफल 154 m हो तो उसका त्रिज्या क्या होगा?
(a)8m
(b)7m
(c)6 m
(d) 5 m
Answers
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Answer:
7m ,is right answer after solve this problem
क्षेत्रफर=pi×r^2
154=22/7 ×r^2
154×7/22=r^2
49=r^2
r=√49
r=7 m
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