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Mathematics 20 Online
OpenStudy (snowcrystal):

Help Please!!!!

OpenStudy (snowcrystal):

I will fan and medal

OpenStudy (anonymous):

wat do u need help with

OpenStudy (nincompoop):

PAYING PHONE BILLS

OpenStudy (anonymous):

haha really?

OpenStudy (snowcrystal):

A community group is building a playground on a rectangular lot of land. The lot measures 6x by 9x, and the group wants to cut out an area for a circular jungle gym with a radius of 4x. How much of the land will be left over after the jungle gym is built?

OpenStudy (anonymous):

let me read it first and see if i can

OpenStudy (anonymous):

okay sorry dont know

OpenStudy (snowcrystal):

\[A.) 38\pi x^2\] \[B.) 22x^2 (27-2\pi)\] \[C.) 2x^2 (27-8\pi)\] \[D.) 38x^2\]

OpenStudy (***[isuru]***):

|dw:1393527636524:dw| \[Area \ of \ a \ rectangle = length \times width \]\[Area \ of \ a \ circle = \pi r^{2}\] ok... since the measurements of the rectangle field is 6x by 4x ... the total area of the rectangle = (6x) x (9x) = ? since the radius of the circle is 4x \[Area\ pf \ the \ circle = \pi \times (4x) \times (4x) = ?\]

OpenStudy (snowcrystal):

\[54x^2\] \[16x^2 \times \pi\]

OpenStudy (***[isuru]***):

yep :) now ... area of the remaining land = area of the rectangular land - area of the circular land

OpenStudy (anonymous):

please help me i give medals

OpenStudy (anonymous):

not trying to be rude but can someone block me from this conversation so it does not pop up on my screen anymore ppppppppppppppllllllllllleeeeeeeeeeeeeaaaasssssseeeee

OpenStudy (snowcrystal):

-_- ur being rude

OpenStudy (anonymous):

sorry really not trying to be

OpenStudy (***[isuru]***):

which means... \[remaining \ part = 54x^{2} - 16 x^{2} \pi\]

OpenStudy (snowcrystal):

So 54x2 - 16x2×π right

OpenStudy (***[isuru]***):

yep :)

OpenStudy (***[isuru]***):

but u have to factorize it...

OpenStudy (snowcrystal):

38x^2π

OpenStudy (snowcrystal):

Would my answer be A?

OpenStudy (***[isuru]***):

no... u cant subtract 54x2 - 16x2×π u can see that 54x^2 has the power of x^2 while 16x^2π has the power of x^2 plus the value of π... since the value of π is not given ...π is also something like a unknown term... so... 54x2 and 16x2×π r not like terms .. so u can subtract them ... but u can factorize them :)

OpenStudy (***[isuru]***):

if u take 2 common from the both terms... \[54x^{2} - 16 \pi x^{2} = 2x^{2}( 27 - 8 \pi )\] got it :) ?

OpenStudy (snowcrystal):

gir that sucks im not good at factoring

OpenStudy (snowcrystal):

gir my computer just loaded its slow lol yah I get it

OpenStudy (***[isuru]***):

kk ... ;)

OpenStudy (snowcrystal):

Thank you for all ur time an effort

OpenStudy (***[isuru]***):

u r welcome... :) lol .. im gonna try finding a new phrase instead of "u r welcome" ... XD

OpenStudy (snowcrystal):

lol okay

OpenStudy (***[isuru]***):

:p

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