20/30 = 2/3
18/27 = 2/3
triangle LKJ similar to triangle LAD
the two triangles<span> are </span>similar<span> because the corresponding sides are in </span>the same<span> ratio</span>
So this can be rewritten as 2/4(4a+b)-1/4(4ab) so this can be simplified more easily, 2/4-1/4=1/4. The simplified version is 1/4(4a+b)
The inverse will be 2x+3/4 or D in your picture
V=4pi*r^3 /3 volume of sphere
Multiple 16 by 1 and then divide by 8 which makes 2.
Multiply 36 by 1 and then divide by 9 which makes 4.
