What Length of canvas of 1.1 m wide is required to make a conical tent of 814 m and height is 24 m ?
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Answer:
Correct option is
B
525 m
Given, h=14 m and floor area =346.5 m
2
⇒πr
2
=346.5
⇒r
2
=346.5×
22
7
=110.25
⇒r=10.5
∴ l=
r
2
+h
2
=
(10.5)
2
+(14)
2
=
110.25+196
=
306.25
=17.5 m
∴ curved surface area =πrl
=
7
22
×10.5×17.5=
7
4042.5
m
2
Width of cloth =1.1 m
∴ length of cloth required =
1.1
7
4042.5
=
7.7
4042.5
=525 m
Hence, 525 m length of canvas is required to build the conical tent.
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