horsegal244
  • horsegal244
What will be the perimeter and the area of the rectangle below if it is enlarged using a scale factor of 7.5? Will give medals!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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horsegal244
  • horsegal244
eyust707
  • eyust707
If we enlarge something "to scale" or "by a factor" or "using a scale factor" we simply multiply each side of the object by the same amount, by the factor. In this case the scale factor is 7.5 so multiply each side by 7.5 and we will get a new rectangle with longer sides. 6*7.5 = 45 8 * 7.5 = 60 |dw:1437408705943:dw| What is the area and perimeter of this larger, "scaled" rectangle?
horsegal244
  • horsegal244
ummmmm i don't get it

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AaronAndyson
  • AaronAndyson
Area = lw Perimeter = 2(l + w)
AaronAndyson
  • AaronAndyson
Since it is "increased/enlarged " using "scale factor" We can, safely,do this: 6*7.5 and 8*7.5
AaronAndyson
  • AaronAndyson
6*7.5 = 45 8*7.5 = 60
AaronAndyson
  • AaronAndyson
Perimeter = 2(l + w)=2(45 + 60) = 2(105) = 210cm Area = lw = 45*60 = 2700cm^2

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