If the polygons are similar then the sides are in proportion.

Therefore we have the equations:


I took this test the other day I put figure 2 and I got it right
6, because 3/4=6/8 so 6 kids ate it if each has 1/8
X^2+ (y+8)^2 = 81.....this is C.
X^2 + y^2 + 16y +64=81 so x^2 + y^2 + 16y = 17.....this is D.
So I’d say C and D are correct
Each student will get 3/32 of the cake :)