# Answer on Algebra Question 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

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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