Melody

Good work Rosala.

You have not really given enough info to answer all these questions.

The diameter is 20m the radius is half the diameter.

the maximum height is 20m

the minimum height is 0m (not really but close ehough)

You need to give more information for the rest.

Great pictures here.  Thanks anonymous.

I am confused by the question.  A segment has an area and it has a circumference but it does not have a length.  So what is it that you really wanted?

Ninja, I love all these circle definitions. do you think that they should make there way into one of your threads?  I'm not sure which one.  Umm  I guess if you reference the info post directly it can go straight inot the reference post.  What do you think?

If you click on the title of the post that you want (rather than the thread) then you will reference directly to THAT post.

Thanks

My thanks to both of you. 

This is a very basic trig graph.  You need to memorise it.   

Zegroes is right  - up until he said it has already been solved.  

It has not been solved bedcause there is nothing to solve.  It is just a formula. (A famous one)

$${\mathtt{E}} = {{\mathtt{mc}}}^{{\mathtt{2}}}$$

Energy =mass * (speed of light)²

Thanks Ninja and DS,

If you want to know dollars per gallon all you need to know is that per means divide

so it has to be 13.60/15   dollars per gallon.

This one is straight forward but if you make good use of the units you can do some very difficult rate problems easily.

It also extends to chain rule in calculus.   

Thanks Ninja and Kitty,

You both give superb answers every time.  

I will admit that Ninja took the edge this time but your answer was really good too Kitty.

Thank you.

tues 22/7/14     wed 23/7

I want to work on this one some more.