anonymous
  • anonymous
i got these four problems wrong... can someone please help me with them... the solid is similar to a larger solid with the given scale factor. what is the surface area and volume of the larger solid?
Mathematics
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
dumbcow
  • dumbcow
Given the scale factor say 3:5 the small solid refers to the 3, the large to the 5 set up a ratio 3/5 = smallVolume/largeVolume cross multiply 3*largeVolume = 5*smallVolume largeVolume = 5/3 * smallVolume Now just use the scale factors in the problems and the volume/sa provided
anonymous
  • anonymous
that doesnt make scene

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dumbcow
  • dumbcow
how so? ratios are just fractions
dumbcow
  • dumbcow
to simplify it given scale factor m:n large = small*(n/m)
anonymous
  • anonymous
i dont get fractions or scale factors
dumbcow
  • dumbcow
ok fractions are parts of a whole just think of scale factors as fractions Fractions i have one pizza with 8 slices one slice is a part of the whole pizza the size of one slice is 1/8 of pizza two slices is 2/8 of pizza four slices is 4/8 of pizza ... if i have four slices that means i have 1/2 the pizza because 4 is one half of 8 Now if i double my portion, i multiply 4 slices * 2=8 slices=whole pizza the scale factor here is 1:2, 1pizza = 2 portions ... i dont know if that helped at all, but find someone to help you understand fractions it is VERY important
anonymous
  • anonymous
okay ill just put it this way.. will someone please just put the number into a formula that i can solve
dumbcow
  • dumbcow
i did above "given scale factor m:n large = small*(n/m) " scale 1:2 smallVolume = 100 largeVolume = (100)*(2/1) = 200

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