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The volume of the space inside a right circular conical tent is 138*2/7 and its vertical height is 4 m.find the canvas required to make the tent and also

find the canvas cost at the rate of Rs 120/m2


I'm giving you hinds.
volume= 1/3πr²h= 138*2/7
from this you can find value of "r"
now slant height, l= √(r²+h²)
and surface area = πrl
cost will be area ×120

hope this will help you :)
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