The height of attention is 9 cm it's base diameter is 24 cm what is it's slant height? Find the cost of canvas required if it costs RS 14 per sq.m.
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Answer:
Rs. 7920
Step-by-step explanation:
Height = 9 cm.
Base diameter = 24 cm
Radius = 12 cm.
Let L be the slant height.
L² = r² + h²
= (12) ² + (9)² = 225.
=> L = √225 = 15 cm.
So the slant height is 15 cm.
Curved surface area of cone = πrL
= π * 12 * 15 = 565.71 m².
cost of tent = Area * Cost/m²
= π * 12 * 15 * 14 = Rs. 7920.
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