What is the surface area of the right cone below? A. 68 units2
B. 54 77 units
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C. 52 units
D. 1047 units

Liam's parents are driving three times as fast as liam is biking, but they left later than he did. if his parents caught up with him two hours after he left, how much later than liam did they leave?

What is the length of the segment joining the points at (4,5) and (6,-2) round to the nearest tenth if necessary

An automated water dispenser fills packets with one liter of water on average, with a standard deviation of 5 milliliter. the manual says that after a year of operation the dispenser should be tested to see if it needs recalibration. a year later a number of filled packets are set aside and measured separately. it is found that the average packet now contains about 0.995 liters. does the dispenser need calibration? explain your answer.