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1. A pizza has a diameter of 16 inches. Which is closest to the area of one slice if the pizza is divided into 6 equal pieces.


2, What is the center and radius of the circle defined by the equation (x - 2)2  + (y + 3)2 = 30

imjkvelasco  Apr 27, 2017
edited by imjkvelasco  Apr 27, 2017
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The formula for the area of a circle is:  A  =  pi·r2.

Since the pizza has a diameter of 16 inches, it has a radius of 8 inches.

Solve:  pi·82  and divide this answer by 6 to find the area of one slice of the pizza.

 

A circle has:  (x - h)2 + (y - k)2  =  r2  for an equation, where the center is (h, k) and the radius is r.

In this problem, h = 2  and  k = -3  and  r = sqrt(30).

geno3141  Apr 28, 2017

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