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Mathematics 17 Online
OpenStudy (anonymous):

What is the exact area of a circle with a diameter of 13 inches?

OpenStudy (saifoo.khan):

pi r^2 pi x 13x13

OpenStudy (saifoo.khan):

530.929

OpenStudy (anonymous):

i have multiple choice

OpenStudy (anonymous):

thats incorrect

OpenStudy (saifoo.khan):

oh SHOOOOOOT!

OpenStudy (anonymous):

6.5π square inches 13π square inches 26π square inches 42.25π square inches 169π square inches its one of these

OpenStudy (anonymous):

so 13 pi

OpenStudy (saifoo.khan):

169/4 pi

OpenStudy (anonymous):

?

OpenStudy (saifoo.khan):

u gave the diameter. in formulae v insert the radius! :O

OpenStudy (anonymous):

yes so 169 is it

OpenStudy (saifoo.khan):

169/4

OpenStudy (anonymous):

42.25

OpenStudy (saifoo.khan):

169/4 pi

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