Ok, so now we're going to look at similarity in the volumes of shapes. Let's try a quick question:
These shapes are similar. Find the volume of the larger shape.
Right. First we need to find the length scale factor:
10/4 = 2.5
SF length: x2.5
Now, to get the volume scale factor we have to cube this, since it's in cm3:
2.5 x 2.5 x 2.5 = 15.625
SF volume = x15.625
Now we multiply this by the volume of the smaller shape...
6 x 15.625 = 93.75cm3
...And we get the volume of the larger shape! You can take our short quiz on this right here:
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