SOLUTION: 1 1/f=1/v+1/u.....please make f,v and u the subject of the formula.show working. 2 calculate the volume of the material used in π20cm long with internal diameter 6cm and

Algebra ->  Test -> SOLUTION: 1 1/f=1/v+1/u.....please make f,v and u the subject of the formula.show working. 2 calculate the volume of the material used in π20cm long with internal diameter 6cm and       Log On


   

Question 1027470: 1
1/f=1/v+1/u.....please make f,v and u the subject of the formula.show working.
2
calculate the volume of the material used in π20cm long with internal diameter 6cm and external diameter 8cm .take π=22/7.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
1%2Ff=1%2Fu%2B1%2Fv
1%2F%281%2Ff%29=1%2F%281%2Fu%2B1%2Fv%29
f=%28uv%2Fuv%29%281%2F%281%2Fu%2B1%2Fv%29%29
f=uv%2F%28v%2Bu%29
The others are solved the same way.
1%2Fv=1%2Ff-1%2Fu
Then work it the same way and
1%2Fu=1%2Ff-1%2Ff
Same way
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What is the object? A tube?
Please repost with additional information.