length of arc

[Guest]

A pie-shaped concert hall is constructed so that the back wall is an arc of a circle and the side walls meet at a point behind the stage. The length of arc along the back wall is 148 feet. The front of the stage is 75 feet from the back wall and is 30 feet from the point where the side walls meet behind the stage. How much area is available for seating in the concert hall? Give answer to nearest square foot

 

[Gene]

The wall is r*theta long.
The area is pi*r^2*(theta/(2*pi))
Solve the first for theta.
Plug that into the second.

 

[tkhunny]

Dear bbatwoman,
We see that you are able to type. You have not shown us that you are able to do ANY mathematics. Please show your efforts on the problems you submit. It is NOT reasonable for you to state, nor for us to assume, that you have absolutely no idea how to proceed. Without some demonstration from you, we are free to assume that you are cheating at some level - getting answers to test questions, getting someone to do your homework, or various other things that would be morally wrong.

To sum up: Throw us a bone. Show us that you are trying. We really can't help on any other basis.

We're all learning. Glad to have honest students of mathematics with us.