exam Maths Puzzle Numerical Ability

what is the total surface are of a cylinder with a height of 3cm, and a radius of 6cm?

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exam Other Question

An experimental electric-solar car completed a 1000-mi. race in 35 hrs. For the 600 mi. traveled during daylight the car averaged 20 mph more than it did for the 400 mi. traveled at night. What is the average speed of the car during the daytime? Can someone help me on this problem?

If f(x) = 5x - 1, Ifind the following:
f(a-2)

Thanks,
Ashley