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Mathematics 17 Online
OpenStudy (shaleiah):

@robtobey

OpenStudy (shaleiah):

OpenStudy (shaleiah):

@Directrix

jhonyy9 (jhonyy9):

hi - do you like we calculi it together - ? first how many will be area of this square ?

OpenStudy (shaleiah):

81

jhonyy9 (jhonyy9):

yes so and area of this cyrcle ?

OpenStudy (shaleiah):

254.34

OpenStudy (shaleiah):

3.14*9^2

jhonyy9 (jhonyy9):

why 9^2 ? 9 is the side length and the diameter of circle not the radius

jhonyy9 (jhonyy9):

do you understand me ?

jhonyy9 (jhonyy9):

so the radius will be just the diameter halfed

jhonyy9 (jhonyy9):

9/2 not equal 3

OpenStudy (shaleiah):

3.14*4.5^2=63.585

jhonyy9 (jhonyy9):

ok than you have got this i believe you so this is area of circle but you need getting how many is the probability in percent that a randomly chosen point lies in the square but not in the circle - yes ? so you need getting area of square without area of circle - how many will be ?

jhonyy9 (jhonyy9):

just substract from area of square the area of circle

jhonyy9 (jhonyy9):

81-63,585= 17,415

OpenStudy (shaleiah):

17.415/81*100=21.5

jhonyy9 (jhonyy9):

so now for you get the right answer you need calculi this resulted 17,415 how many percent mean of area of the square - yes ?

OpenStudy (shaleiah):

21.5%

jhonyy9 (jhonyy9):

so 81 ----- 100% 17,415 --- x% --------------- x = 17,415*100/81 = ?%

jhonyy9 (jhonyy9):

yes so this is the right way to calculi and get the right answer sure hope you understand it now clearly yes ?

OpenStudy (shaleiah):

Yes, thanks !!

jhonyy9 (jhonyy9):

np was my pleasure and anytime bye bye

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