Question

radius of a cylinder is 21cm and height is 70 cm.how many spheres can fitted with radius 7 cm?​

Answer 1

Answer:

2 spheres in any angle of cylinder

Answer 2

Answer:

Radius of cylinder = 21 cm

height = 70 cm

Vol. of Cylinder = πr^2h

=(π × 21 × 21 × 70) cm^3

radius of sphere = 7cm

Vol. of sphere = 4/3 π r^3

= ( 4/3 × π × 7 × 7 × 7 ) cm^3

No. of sphere = Vol. of cylinder/ vol. of sphere

= ( π×21×21×70)/(4/3 ×π×7×7×7)

= (3×21×21×70)/( 4×7×7×7)

= 270/4

= 67.5

Hence ,

67 spheres can be fitted in cylinder .

Hope it helps you...