Question

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Pls help me out to answer this question!
Here's it is:-

=>The total surface area of a cylinder is 462cm^2. It's curved surface area is one-third of its total surface area. Find the volume of the cylinder.

Answer 1

Curved surface area = total surface area / 3.

Curved surface area = 462/3 = 154.

Rest of area = 462 - 154 = 308.

2πr^2 = 308.

r^2 = 308 x 7 / 44 = 49.

r = 7.

2πrh = 154.

h = 154 / 2 x 22 = 7/2.

Volume = πr^2 h = (22/7) x (7^2) x (7/2) = 539.

Volume = 539 cm^3

Answer 2

hello ✌✌

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TOTAL SURFACE AREA OF THE CYLINDER(TSA)=462CM²

CURVED SURFACE=1/3 OF TSA

=1/3 X 462

=154CM²

AREA OF EACH CIRCLE=(462-154)/2

=154CM²

PI*R²=154

R²=49

R=7

2PI*R*H=154

H=154*7/22*7

H=3.5

VOLUME=PI*R²*H=22/7*49*35/10

VOLUME=539CM³

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#HOPE IT HELPS U ❤❤✌