CBSE BOARD X, asked by gamersingh7351, 1 year ago

A solid is in form of a cylinder with hemispherical ends. The total height of solid is 20 and diameter of cylinder is 7 cm. Find the total volume of solid

Answers

Answered by Simran1203

Height is 20 cm

Diameter is 7cm so radius 7/2=3.5cm

Volume of cylinder =pie × r^2 × h

Pie= 3.14

Volume = 3.14 × 3.5 × 3.5 × 20= 770 cm^3

rimjhim27ts: The answer is wrong

Simran1203: Sorry for the incomplete answer. Answer =total volume =volume of cylinder + volume of two hemisphere at its end....volume of cylinder is 770cm^3 now for the volume of hemisphere is 2/3 pie*r*r*r. So volume of hemisphere is 2/3*3.14*3.5*3.5*3.5 = 89.8333333333...as there are are two hemishperes so volume of hemisphere is 179.6666666667..thus total volume of solid =volume of cylinder +volume of two hemisphere i.e949.66666666667cm3

rimjhim27ts: U hv to take the height of cylinder as 13

Answered by rimjhim27ts

Length of solid =20

Height of cylinder = 20-3.5*2=13cm

Vol of solid = 3.14 *3.5*3.5[13+4/3*7/2]

rimjhim27ts: The answer will be 680.16

Simran1203: This answer is also wrong

harsidaksingh6768: 680 .16 is right answer wether 949.66 is a wrong answer

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