a circus tent is in the form of right circular cylinder and right circular cone above its the diameter and height of cylindrical part of the 10th or 126 M and 5 M respectively the total height of the tent is 21 m.find the total cost of tent if the canvas used costs rupees 12per m square
Answers
The total cost of the tent if the canvas used costs rupees 12 per m square is Rs. 1,78,200.
Step-by-step explanation:
Referring to the figure attached below, lets make some assumptions,
AD = total height of the tent = 21 m
BD = the height of the cylindrical part of the tent = 5 m
∴ AB = the height of the conical part of the tent = 21 - 5 = 16 m
The diameter of the base of the tent, d = 126 m
So, the radius of the base of the tent, r = 126/2 = 63 m
Step 1:
The slant height of the cone is given by,
l =
We know that,
The total canvas used in making the tent is given by,
= Total curved surface area of the tent
= [Curved surface area of cylindrical part] + [Curved surface area of conical part]
= [2πrh] + [πrl]
= [2 × (22/7) × 63 × 5] + [(22/7) × 63 × 65]
= [1980 m²] + [12870 m²]
= 14850 m²
Step 2:
Now,
The cost of the canvas is given as Rs. 12 per metre square.
Therefore,
The total cost the tent with the required area of canvas i.e., 14850 m² is,
= 14850 m² * Rs. 12
= Rs. 1,78,200
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