Answer on Algebra Question for Ben
the answer to this is: 0.2kg cm^-3
i just need the working out because i don't really understand how to do it.
ok next question
the dimensions of a piece of metal are: length: 55.5cm, breadth: 2.0cm, thickness: 0.02cm. calculate: a) the area of the largest surface. b) the volume. c) the perimeter of the largest face.
the answers are: a) 110cm^2 b) 2cm^3 c) 115.0cm
estimate the order of magnitude of the answer for each of the following calculations:
a) (6.2 x 10^20) x (3.8 x 10^-18) b) (600) x (10 x 10^8)
c) 5.4 x 10^-12 divide by 3.1 x 10^-15
the answers are: a) 10^3 or 10^4 if converted to OM first. b) 10^12
c) 10^3 or 10^4 if converted to OM first.
once again i just need the working out because i dint understand how to do it.
thanks a lot in advance. very, very much appreciated
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