Wednesday, February 1, 2012

Re: Math HW?

Mr. Petri has a rectangular plot of land with length that equal 20 ft. and the width is 10 ft. He wants to design a flower garden in the shape of a cirlce with two semicircles at each end of the center circle. He will fill in the shaded area with wood chips. If one bag of wood chips covers 5 square feet, how many bags must he buy.



*** It's a regents question. The diagram is shown for number 39 on August 2005.

Re: Math HW?
okay first the area of the rectangle which is 200.

Then you need to find the area of the circles. Altogether there are two circles right. So now do the formula for a circle. (pie x r squared) *radius would be 5 . Multiply the answer by 2, for both circles than subtract it by 200. You then divide the answer by 5. I got 8.6, and since you cant get 8.6 bags just make it 9. Hope that helped
Reply:sorry i can't help you but one question:



How do you know the answer without "solving it first"



some advice:



There HAS to be a way to solve it! Think more deeply into it.


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