Question

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?

Answer 1

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

Answer 2

that doesnt make scene

Answer 3

how so?
ratios are just fractions

Answer 4

to simplify it
given scale factor m:n
large = small*(n/m)

Answer 5

i dont get fractions or scale factors

Answer 6

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

Answer 7

okay ill just put it this way.. will someone please just put the number into a formula that i can solve

Answer 8

i did above
"given scale factor m:n
large = small*(n/m) "
scale 1:2
smallVolume = 100
largeVolume = (100)*(2/1) = 200