Homework Help: algebra

Posted by zainab on Wednesday, May 4, 2011 at 6:42pm.

You have been put in charge of making pizza for the fundraiser. You are told to make the larger pizzas with a radius 3 less than twice the radius of the smaller pizzas. The difference in the area of the pizzas is to 24 pi. Find the radius of the smaller pizza.

algebra - PsyDAG, Thursday, May 5, 2011 at 11:12am
A = π r^2

Difference (24π) = (2r-3)^2π - r^2π

Divide both sides by π .

24 = (2r-3)^2 - r^2

I'll let you calculate the rest.

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