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anonymous

  • 5 years ago

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?

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  1. anonymous
    • 5 years ago
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  2. dumbcow
    • 5 years ago
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    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

  3. anonymous
    • 5 years ago
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    that doesnt make scene

  4. dumbcow
    • 5 years ago
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    how so? ratios are just fractions

  5. dumbcow
    • 5 years ago
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    to simplify it given scale factor m:n large = small*(n/m)

  6. anonymous
    • 5 years ago
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    i dont get fractions or scale factors

  7. dumbcow
    • 5 years ago
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    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

  8. anonymous
    • 5 years ago
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    okay ill just put it this way.. will someone please just put the number into a formula that i can solve

  9. dumbcow
    • 5 years ago
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    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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