0000) 00
Here are two closed containers and four balls just fit in each container.
AYA
Curved surface area
of a cylinder is 2nrh
Container A
Container B
Each ball has a diameter of 60 mm.
Which container has the smaller surface area?
You must show your working (using mm).
Your final line should say either, 'A is smaller' or 'B is smaller'.

There are two major tests of readiness for college: the act and the sat. act scores are reported on a scale from 1 to 36. the distribution of act scores in recent years has been roughly normal with mean µ = 20.9 and standard deviation s = 4.8. sat scores are reported on a scale from 400 to 1600. sat scores have been roughly normal with mean µ = 1026 and standard deviation s = 209. reports on a student's act or sat usually give the percentile as well as the actual score. the percentile is just the cumulative proportion stated as a percent: the percent of all scores that were lower than this one. tanya scores 1260 on the sat. what is her percentile (± 1)?