what will be the cost of making a closed cone of tin sheet having radius of base 6 cm and slant height 8m if the rate of making rupees 10 per square metre?
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Answer:
Rs. 2639.9 or Rs. 2640 approx...
Step-by-step explanation:
Given base radius = 6 m
Slant height = 8 m
So, We know that Curved Surface Area of Cone = πrl = 22/7 * 6 * 8
= 150.85 cm²
Area of base of cone = πr² = 22/7 * 6 * 6 = 113.14 cm²
Thus, Total Surface Area of Cone = Area of base + CSA = 113.14 + 150.85
= 263.99 or 244 cm² approx
Now, Cost of sheet per sq.m = Rs. 10
So, Total Cost required = Rs. 263.99*10 = Rs. 2639.9 or Rs. 2640 approx...
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