Find TSA of CSA 400cm2
Answers
Answered by
2
Answer:
TSA of cylinder =2πrh+2πr
2
CSA of cylinder =2πrh
Volume of cylinder =πr
2
h
Now,
TSA
CSA
=
2
1
(Given)
∵TSA=616cm
2
(Given)
∴CSA=
2
1
×616
⇒CSA=308cm
2
Now,
TSA=CSA+2πr
2
616−308=2πr
2
⇒r
2
=
22×2
308×7
=49cm
2
⇒r=7cm
Also,
2πrh=2πr
2
=308cm
2
⇒2πrh=2πr
2
⇒r=h
Therefore,
Volume of cylinder =πr
2
h
=
7
22
r
3
(∵r=h)
=
7
22
×(7)
3
=1078cm
3
Answered by
0
Answer:
LSA=400CM^2
=LSA=4×A^2
A^2=400/4
A^2=100
A^2=(10)^2
TSA=6Aa^2
6×(10)^2
6×100
600CM^2
Volume=a^3
VOL^3
=1000CM^2
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