Question

The thickness of a hollow metallic cylinder is 2 cm. It is 70 cm long with outer
radius of 14 cm. Find the volume of the metal used in making the cylinder,
assuming that it is open at both the ends. Also find its weight if the metal
weighs 8 g per cm?
​

Answer 1

Answer:

Given

Thickness of cylinder =2cm

Length of cylinder (h) =70cm

Outer Radius (R) =14cm

Then inner Radius(r) =outer Radius - thickness

=14-2

=12cm

Volume of hollow cylinder

=11440cm³

Weight of 1cm³=8gm

So weight of 11440cm³=11440x8

=91520gm

=91520/1000

=91.52kg (1kg=1000gm)

Step-by-step explanation:

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