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l²=h²+(r1-r2)²
l²=24²+(15-5)²
l²=576+100
l=√676
l=26
(i)CSA=π(r1+r2)l=3.14(5+15)26
=3.14×20×26
=1632.8cm²
(ii)To prevent the environment from getting polluted.
Cheers!
l²=24²+(15-5)²
l²=576+100
l=√676
l=26
(i)CSA=π(r1+r2)l=3.14(5+15)26
=3.14×20×26
=1632.8cm²
(ii)To prevent the environment from getting polluted.
Cheers!
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