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

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1.	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.	9.504
B.	4.752
C.	2.376
D.	2.112
Answer» D. 2.112

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