Question

Find the volume of the metal used in a hollow cylinder open at both ends whose external diameter is 28cm,thicknes3.5cm and height 10cm​

Answer 1

Answer:

89.83 cm³

Step-by-step explanation:

External Radius = 14 cm (R)

Internal Radius = 10.5 cm (r)

Height = 10 cm (h)

Volume

= 1/3*π*h*{(r+R)(R-r)}

= 1/3*π*10*{(24.5)(3.5)}

= 1/3*22/7*10*245/10*35/10

= 89.83 cm³