anonymous
  • anonymous
help
Mathematics
katieb
  • katieb
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anonymous
  • anonymous
anonymous
  • anonymous
what is \(6\times 2.5\)?
anonymous
  • anonymous
15

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anonymous
  • anonymous
ok and what is \(8\times 2.5\)?
anonymous
  • anonymous
20
anonymous
  • anonymous
|dw:1438178109944:dw|
anonymous
  • anonymous
now find the perimeter
anonymous
  • anonymous
how
anonymous
  • anonymous
anonymous
  • anonymous
see we were using a scale of 2.5 so 1cm = 2.5 so 6cm = 6 *2.5
anonymous
  • anonymous
am i right @satellite73 ? :D
anonymous
  • anonymous
15
anonymous
  • anonymous
yes so now find the area
anonymous
  • anonymous
how
anonymous
  • anonymous
area = length * breadth
anonymous
  • anonymous
15*20=300
anonymous
  • anonymous
yes
anonymous
  • anonymous
perimeter = 2( l+b)
anonymous
  • anonymous
what?
anonymous
  • anonymous
yes 2 * ( length + breadth)
anonymous
  • anonymous
add, not multiply
anonymous
  • anonymous
\[15\times 20\]is the area, not the perimeter
anonymous
  • anonymous
thats the formula or u cand add the four sides
anonymous
  • anonymous
yes thats what i told him
anonymous
  • anonymous
but which one is it? Perimeter = 38 cm, area = 300 cm2 Perimeter = 70 cm, area = 300 cm2
anonymous
  • anonymous
anonymous
  • anonymous
anonymous
  • anonymous
15+15+20+20
anonymous
  • anonymous
D!

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