Question

The circumference of the base of 20m high conical tent is 44m.Calculate the length of canvas used in making the tent if width of canvas is 2m. *

Answer 1

Answer:

option is B)

Let the radius of the base be r meters.

Then, the circumference:

2πr=44 m.

⟹ r=

2π

44

=

2×22

44×7

=7m.

Let the slant height be l meters.

Then,

l=

h

2

+r

2

=

7

2

+24

2

=

625

=25m.

Now, Surface area = πrl=

7

22

×7×25=550m

2

.

∴ Area of canvas required =550 m

2

.

Given that width of the canvas is 2 m.

Therefore, Length of canvas required =

2

550

=275m.

plz follow and thanks me.

mark me as brainliest

Answer 2

Step-by-step explanation:

Let the radius of the base be r meters.

Then, the circumference:

2πr=44 m.

⟹  r=44/2π=44×7/2×22=7m.

Let the slant height be l meters.

Then,

l=under root h^2+under root r^2=(under root 7^2+ 24^2)=under root 625=25m.

Now, Surface area = πrl=22/7×7×25=550m2.

∴ Area of canvas required =550 m2.

Given that width of the canvas is 2 m.

Therefore, Length of canvas required = 550/2=275m.