Question

sᴏʟᴠᴇ ᴛʜᴇ ᴀʙᴏᴠᴇ ǫᴜᴇsᴛɪᴏɴ


⚠︎⚠︎ɴᴏ ᴄᴏᴘʏ/sᴘᴀᴍ⚠︎⚠︎

☞︎︎︎30❤︎+ғᴏʟʟᴏᴡ- ɪɴʙᴏx

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Answer 1

Answer:

Your solution above✌

Answer 2

Step-by-step explanation:

HEY MATE ..

External d of hollow cylinder =20 cm

Therefore , r = 10 cm

Thickness = 0.25 cm

Hence ,internal r = ( 10 - 0.25 ) = 9.75cm

L of cylinder ( h) = 15 cm .

volume = π h ( R^2 - r^2 ) = π × 15 ( 10^2-9.75^2)

=15π( 100- 95.0625 ) cm^3

=15π×4.9375)cm^3

D =2cm

The rfore , r =1cm

Let h be thr length , then , volume =π r^2h = (π(1×1)h =π h .

Now ,A.T.Q:

π h = 15π×4.9375.

⇒h = 15× 4.9375.

⇒h = 74.0625.

L of cylinder = 74.0625.

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