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The height of a right circular cone is 24 cm and the radius of its base is 7 cm. What is the cost of painting the curved surface area of the cone at the rate of Rs. 6 per `cm^2`? `(pi= 22/7)`
एक लम्ब वृत्तीय शंकु की ऊंचाई 24 सेमी है तथा इसके आधार की त्रिज्या 7 सेमी है | 6 रुपये प्रति वर्ग सेमी की दर से शंकु के वक्र पृष्ठ क्षेत्रफल को रंगने की लागत कितनी आएगी ?

A

Rs. 3600

B

Rs. 3300

C

Rs. 880

D

Rs. 4200

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