Question

Find volume of cyclinder if TSA is 1188sq. Cm and CSA is 880sq. cm

Answer 1

2πr(h+r)=1188======1
2πrh=880======2
put 2 in 1
880+ 2πr^2=1188
2πr^2=308
r^2=154×7/22=7×7
r=7
put in 2
2×22/7×7×h=880
h=20
volume=2πr^2h=2×22/7×7×7×20=6160

Answer 2

Hi...☺

Here is your answer...✌
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GIVEN:

TSA of Cylinder = 1188 cm²

2πrh+2πr² = 1188cm² ____(1)

And,

CSA of Cylinder = 880 cm²1

2πrh = 880 cm² ____(2)

Now subtracting (2) from (1)
We get,

2πrh+2πr²-2πrh = 1188 - 880

2πr² = 308

(22/7)r² = 308/2

r² = 154×7/22

r² = 49

=> r = 7 cm

Putting in eq(2)
we get,

2π(7)h = 880

(22/7)×7h = 880/2

22h = 440

=> h = 20 cm

Now,

Volume of Cylinder = πr²h

= (22/7)×49×20

= 22×7×20

= 3080 cm³