The Water Cohesion Lab

I learned that the surface area of a penny is 6.28 cms,nickle is 4.72 cms,and dime is 4.72 cms. I also learnt that on trial1 for penny:I put 32 drops partner put 11 drops, trial 2: I put 28 drops partner put 12 drops and trial 3: I put 22 drops and partner put 15 drops. Total average was 18. Dime was 19 and nickle was 39.