anonymous
  • anonymous
Two rectangles are similar. Rectangle ABCD has a length of 5 in and a width of 10 in. Rectangle ABCD is dilated by a scale factor of 4 to form rectangle FGHJ. Answer these questions using the information provided: 1. How is the area affected by the dilation? 2. How is the perimeter affected by the dilation?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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RadEn
  • RadEn
to get the length and the width of rectangle of FGHJ, just multiply by 4 from the length and the width of rectangle ABCD. so, l = 4 * 5 = 20 w = 4 * 10 = 40 now, to get area use the formula : area = length * width = 20 * 40 = .... in
anonymous
  • anonymous
Thanks; let me read your reply.
anonymous
  • anonymous
It might take a few mins,ok?

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More answers

anonymous
  • anonymous
60 in,yes?
RadEn
  • RadEn
for perimeter of rectangle FGHJ, use the formula : perimeter = 2(l+w) = 2(20+40) = 2 * 60 = ... in
RadEn
  • RadEn
yes, that's right sorry, the unit for area must be in squared not in :)
anonymous
  • anonymous
ok, thank u! so, how should I state my answer?
anonymous
  • anonymous
You can call me '123', by the way.
RadEn
  • RadEn
oppss.. my eyes still want to bed, @123 :) area = 20 * 40 = 80 in^2 not 60 (sorry) perimeter = 2(20+40) = 2(60) = 120 in
anonymous
  • anonymous
lol. :D
RadEn
  • RadEn
opss.. 20 * 40 = 800 not 80 my stupid --"
anonymous
  • anonymous
nope. so, what should i write for number 1?
RadEn
  • RadEn
800 in^2
anonymous
  • anonymous
oK. But 1 is asking how the area was affected by the dilation.
anonymous
  • anonymous
@AriPotta
RadEn
  • RadEn
it can be : area = 16 times of the area of before do dilated
anonymous
  • anonymous
Oh,ok. Let me write that down .
anonymous
  • anonymous
or '16 times the original area'?
RadEn
  • RadEn
yes
AriPotta
  • AriPotta
4^2
anonymous
  • anonymous
Ok, thx
AriPotta
  • AriPotta
i told you that trick before, enchilada
anonymous
  • anonymous
I'm forgetful. SORRY. HAHHAHAHAHA
AriPotta
  • AriPotta
for area, you square the amount of times it changed. like, if the scale factor is 3, 3^2 = 9. so the area would be 9 times greater
anonymous
  • anonymous
Oh. okay.
AriPotta
  • AriPotta
if you're doing volume, you cube it
anonymous
  • anonymous
So the answer would be is 16 times larger than before?
AriPotta
  • AriPotta
yea, 16 times the original
anonymous
  • anonymous
Oh, I GET IT! I THINK. THANKS!
anonymous
  • anonymous
The perimeter is.
AriPotta
  • AriPotta
the perimeter would be 4 times greater
anonymous
  • anonymous
|dw:1360977934911:dw|
anonymous
  • anonymous
Is that a good drawing?
AriPotta
  • AriPotta
x is the scale factor. perimeter: x^1, area: x^2, volume: x^3
anonymous
  • anonymous
thanks. i get it, volume is cubed, area is squared. so the perimeter is .. um..
AriPotta
  • AriPotta
so since the scale factor is 4... 4^1 = 4. perimeter is 4x the original. is this making sense?
anonymous
  • anonymous
Ahhhh! I GET IT NOW! WOW. I'M SO SLOW. I APOLOGIZE TO YOU BOTH.

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