waheguru
PLEASE DONT GIVR THE ANSWER JUST TAKE ME STEP BY STEP UNTIL I --- GET THE ANSWER
A CIRCULAR GARDEN HAS A DIAMETER OF 12M BY HOW MUCH DOES TEH DIAMETER HAVE 2 BE INCREASED SO THAT THE AREA TRIPLES
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pottersheep
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I will attempt to help you
LagrangeSon678
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radius is (Diameter)/(2)
so for the area to be tripled i guess we can simply triply the radius
pottersheep
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So area of circle: πr2
Diameter: 12 so Radius :6m
The area we have now: π(6)^2 = 113.1m^2
area we need = 113.1m^2 x 3 = 339.2
waheguru
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yea i got that so far
pottersheep
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I'm thinking :P
waheguru
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hmm
pottersheep
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πr2 = 339.2
r^2 = 339.3/pi
waheguru
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thats what i was doing jus now =)
pottersheep
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r^2 = 108 (im rounding the numbers :P)
r = 10.4
waheguru
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YAY I ALSO GOT THAT but the asnwers say 8.8m
pottersheep
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darn. are you sure you wrote the question right?
waheguru
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lets plug it in and see if it is tripled
waheguru
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yea im sure bro
pottersheep
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OH I GET WHY. Because you have to say how much it increases by
waheguru
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?
pottersheep
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Radius now is 10.4 for diameter is 20.8.
Before the diameter was 12.
pottersheep
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*so diameter is 20.8
waheguru
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and bak 2 our andwer 10.4
waheguru
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oh never mind
pottersheep
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whoopdedoo
waheguru
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whait how dod u get it agiin sry
pottersheep
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20.8 - 12 =
pottersheep
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8.8 =D
waheguru
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YEYYYYYYYYYYYY WE DID IT I GOT IT 2 THX BROOOOOO
pottersheep
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I'm a girl but no problem=)
waheguru
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OH sry
waheguru
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wat grade?
pottersheep
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11 advanced functions
waheguru
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wow im just in grade 9
waheguru
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where u from
pottersheep
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Canada, hby?
waheguru
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me 2
waheguru
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hudson bay?
pottersheep
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Grade 9 math can be kind of confusing since it's the first year of highschool and everyone learned different things from different schools . =)
pottersheep
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my school's in ontario
waheguru
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yea thx 4 ur help
pottersheep
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no problem
waheguru
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bye
pottersheep
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byebye lol
dmancine
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\[\frac{A_{2}}{A_{1}}=\frac{\pi r_{2}^{2}}{\pi r_{1}^{2}}\]\[3=\frac{\pi r_{2}^{2}}{\pi 6^{2}}=\frac{r_{2}^{2}}{36}\]etc.