a 5m wide cloth is used to make conical tent of base diameter 14m and height 24m. find the cost of cloth used at the rate of rupees 25 per meter. ( use pie = 22/7 )
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Answered by
15
Answer:
let the slant height of tent be l
height=24m,diameter=14m,
l²=h²+r²
l²=24²+7²
l²=576+49
l²=625
l=25m
csa of a cone=22/7×7×25
=550m²
length of cloth used=area/width of cloth
=550/5
=110m
cost of cloth used at the rate of rupees 25 per metre=25×110
=rupees 2750
Step-by-step explanation:
sakthishamifb:
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Answered by
4
Answer: given: w= 5m
d=14m , r =d/2=7m
h= 24m
Step-by-step explanation:
∴ slant height, l = √(r2 + h2) = √(49 + 576) = √625 = 25 m
CSA of the cone = πrl = (22/7) x 7 x 25 = 550 m2
Area of the cloth used = 550 m2
Given, width of the cloth = 5 m
Length of the cloth used = Area/Width = 550 / 5 = 110 m.
Total cost, at the rate of ₹25/m = length×price =110×25 = ₹2750.
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