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Mathematics 16 Online
OpenStudy (anonymous):

please help!! Find the area of the circle if the square has an area of 900 in2. Give your answer in terms PI. 30 PI. 2 900 PI. in2 225 PI. in2 60 PI. in2 *PI=3.14 https://rialto5819-ehs-pps.gradpoint.com/Resource/2146263,72F,0,0,0,0,0/Assets/testitemimages/geometry_a/tools_of_geometry/mc156-1.jpg

OpenStudy (anonymous):

@Directrix

OpenStudy (jdoe0001):

\(\bf 900 \implies 30^2 \implies 30 x 30 \implies length \times width\)

OpenStudy (jdoe0001):

area of a cirlcle = \(\bf \huge \pi r^2\)

OpenStudy (jdoe0001):

r = radius = \(\bf \cfrac{diameter}{2}\)

OpenStudy (anonymous):

450=r

OpenStudy (anonymous):

?

OpenStudy (anonymous):

225in2

OpenStudy (anonymous):

how did you get the answer

OpenStudy (jdoe0001):

hmmm who? hehe

OpenStudy (jdoe0001):

what do you mean?

OpenStudy (anonymous):

how did you get the answer i mean you knew it before i did right?

OpenStudy (jdoe0001):

\(\pi 15^2 \implies 225\pi\)

OpenStudy (jdoe0001):

no, I didn't, but the formula for it is very straight-forward

OpenStudy (jdoe0001):

is just a matter of plugging in the values :)

OpenStudy (anonymous):

ok thank you very much

OpenStudy (jdoe0001):

yw

OpenStudy (anonymous):

HOW DID YOU GUYS GET THE ANSWER ? I DONT UNDERSTAND

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