Math, asked by tanikakumawat77, 5 months ago

A semicircular sheet of paper of
diameter 4ram is bent into a
open conical cup. Find the
depth & volume of the cup.
LD Radius of sector = slant height of come
Cength of are of sector = circumference
of base of love​

Answers

Answered by Anonymous
1

Answer:

ANSWER

REF.Image.

→ surface area of sheet =

2

πr

2

=

2

1

×

7

22

(7)

2

=77cm

2

⇒2r=2πr

1

⇒r

1

=

π

r

=

And surface area of cone =πrl

⇒π(

π

r

)l=77⇒l=

r

77

=11

as l

2

=h

2

+r

12

=h

2

=11

1

π

2

r

2

volume =

3

1

πr

12

h=

3

π

×

π

2

r

2

(121−

π

2

r

2

)

=

7

2

(121−

π

2

7

2

)

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