Answer:
16
Step-by-step explanation:
so we know the size of 2 edges or sides of the cake 6in and 10in, in a rectangle the opposite sides are the same, so there are 2 6in and 2 10in sides. add them together (6+6+10+10) to get 32in, now divide that by 2(the spacing of the candle) to get 16 candles around the edge.