120 cm लंबे रोलर का व्यास 84 cm है। जमीन को समतल करने में रोलर के पूरे 500 चक्कर लगते है। रू0 1.50 प्रति वर्ग मी. पर जमीन को समतल करने की लागत क्या होगी?A. Rs. 5750B. Rs. 6000C. Rs. 3760D. Rs. 2376

120 cm लंबे रोलर का व्यास 84 cm है�

1.	120 cm लंबे रोलर का व्यास 84 cm है। जमीन को समतल करने में रोलर के पूरे 500 चक्कर लगते है। रू0 1.50 प्रति वर्ग मी. पर जमीन को समतल करने की लागत क्या होगी?A. Rs. 5750B. Rs. 6000C. Rs. 3760D. Rs. 2376
Answer» Correct Answer - D According to the question व्यास `=84cm` त्रिज्या `=42cm=0.42cm` ऊंचाई `=120cm=1.2m` `:.` बेलन की परिधिे `=2pirh` `=(2xx22xx0.42xx1.2xx1.2xx500)/7` `Rs. 2376`

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