# Answer to Question #6230 in Algebra for Ben

Question #6230
calculate: (2.34kg + 1.118kg) divide by (1.05cm x 22.2cm x 0.9cm) 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 next question 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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