A cylinder 84 cm long is made of steel. Its external and internal diam

| A cylinder 84 cm long is made of steel. Its external and internal diameters are 10 cm and 8 cm respectively. What is the volume of the steel in the cylinder (in 10-3 m3 and correct up to three decimal places)?

A. 2.112

B. 9.504

C. 2.373

D. 4.752

Right Answer is: C

SOLUTION

Height of cylinder = 84 cm

External and internal Diameters are 10 cm and 8 cm respectively.

Radius = 5 cm and 4 cm respectively.

Volume of steel =

=

=

= 2373

= 2.373

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