Question

What Length of canvas of 1.1 m wide is required to make a conical tent of 814 m and height is 24 m ?​

Answer 1

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.