Question

A solid iron pole consists of cylinder of height 70 cm and base diameter 10cm which is surmounted by another cylinder of height 28cm and radius 3cm find the mass of the pole given that 1cm³of iron has approximately 5gr.mass

Answer 1

Answer:

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volume of first cylinder = 3.14×12×12×220

volume of second cylinder =3.14×8×8×60

on solving these two and then adding we get = 111532.8cm cube

mass per cm cube = 8gram

Total Mass= 11532×8=892262.4 gram =892.26 kg

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Answer 2

Step-by-step explanation:

volume of first cylinder = 3.14×12×12×220 = 99,475.2 cm³

volume of second cylinder =3.14×8×8×60 = 12,057.6 cm³

On adding = 111532.8 cm³

mass per cm cube = 8 g

Total Mass= 11532×8=892262.4 gram =892.26 kg