a solid is composed of cylinder with hemispherical ends . if the whole length of the solid is 100cm and the diameter of the hemispherical ends is 28 cm . find the volume of the solid .(hint :- h of cylinder = 100-14-14 =72 cm ) About the author Ruby

In the given solid height of cylinder = 100 – 2{radius of hemisphere} = 100 – 28 = 72 CSA of the solid = CSA of cylinder + CSA of both hemispheres = 2*22/7*14*72 + 2 { 2*22/7*14*14 } = 8800cm2 Cost = 8800 * .05 = Rs 440 Plz Mark as Brainliest, If it Helps! Reply

Step-by-step explanation: radius of the cylinder =r 1 =18cm height of the cylinder h=72cm total surface area = curved surface are of the cylinder + surface areas of hemispherical ends =(2πrh+2×2πr 2 )cm 2 =(2πrh+4πr 2 )cm 2 =2πr(h+2r)cm 2 =2× 7 22 ×18×(72+36)cm 2 =12219.42cm 2 Rate of polishing 7 paise per sq.cm Cost of polishing =Rs.(12219.42× 100 7 =Rs.855.36Rs Reply

In the given solid height of cylinder = 100 – 2{radius of hemisphere} = 100 – 28 = 72

CSA of the solid = CSA of cylinder + CSA of both hemispheres

= 2*22/7*14*72 + 2 { 2*22/7*14*14 }

= 8800cm2

Cost = 8800 * .05 = Rs 440

Plz Mark as Brainliest, If it Helps!

Step-by-step explanation:radius of the cylinder =r

1

=18cm

height of the cylinder h=72cm

total surface area

= curved surface are of the cylinder + surface areas of hemispherical ends

=(2πrh+2×2πr

2

)cm

2

=(2πrh+4πr

2

)cm

2

=2πr(h+2r)cm

2

=2×

7

22

×18×(72+36)cm

2

=12219.42cm

2

Rate of polishing 7 paise per sq.cm

Cost of polishing =Rs.(12219.42×

100

7

=Rs.855.36Rs