एक वृत्ताकार मैदान को समतल करने की लागत 50 पैसे वर्ग मीटर की दर से 7700 आती है। उसके चारों ओर बाड़ लगाने की लागत 1.20 प्रति मीटर की दर से क्या आएगी। ( प्रयोग करें `pi=22/7`)A. Rs. 132B. Rs. 264C. Rs. 528D. Rs. 1056

एक वृत्ताकार मैदान को समतल

1.	एक वृत्ताकार मैदान को समतल करने की लागत 50 पैसे वर्ग मीटर की दर से 7700 आती है। उसके चारों ओर बाड़ लगाने की लागत 1.20 प्रति मीटर की दर से क्या आएगी। ( प्रयोग करें `pi=22/7`)A. Rs. 132B. Rs. 264C. Rs. 528D. Rs. 1056
Answer» Correct Answer - C According to question Area `xx` rate `=` expenditure `pir^(2)xx1/2=Rs. 7700` `r^(2)=(7700xx7)/22xx2` `r=70` Perimeter `=2pir=2xx22/7xx70` `=440` metre Expenditure `=440xx1.20` `=Rs. 528`

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