Ek vritt ki Paridhi aur Vyas ke bich Antar 150 metre hai use vritt. trijya Kitni Hogi .
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2*trijya=vyas
Paridhi=2*pi*r
2*22/7*r-2r=150
2r(22/7-1)=150
15/7r=75
R=5*7=35 answer
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