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Mathematics 9 Online
OpenStudy (anonymous):

Fill in the blank. A pie with a diameter of 12 inches is cut into 8 equal slices. Each slice of the pie has an area of ______ square inches. Round your answer to two decimal places.

hartnn (hartnn):

do you know what is the formula for area of circle ?

OpenStudy (anonymous):

pi*R^2 ???

hartnn (hartnn):

correct! we are given diameter. diameter = 2* radius R so, 12 = 2*R can you find the radius from here ?

OpenStudy (anonymous):

6

hartnn (hartnn):

yes, so whats the area of total pie ?

OpenStudy (anonymous):

113.1

OpenStudy (anonymous):

oh so divide that by 8

hartnn (hartnn):

absolutely!

OpenStudy (anonymous):

okay thank you again

hartnn (hartnn):

welcome ^_^

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