एक तांबे के तार को 81 सेमी2 क्षेत्रफल वाले एक वर्ग के आकर में मोड़ा जाता है यदि उसी तार को अर्धवृत के आकार में मोड़ा जाता है, तो अर्धवृत्त की त्रिज्या (सेमी में) क्या होगा। (π = 22/7 लीजिए) - Study24x7
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Nisha Tanwar
23 Nov 2019 01:38 PM study24x7 study24x7

एक तांबे के तार को 81 सेमी2 क्षेत्रफल वाले एक वर्ग के आकर में मोड़ा जाता है यदि उसी तार को अर्धवृत के आकार मे...

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A

16

B

14

C

10

D

 7

SSC Railways
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