Acellus A river flows due south at 100 ft/min.
A motorboat that travels 450 ft./min.
in still water is headed due east
across the river.
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Find the resultant speed of the boat.
[?] ft./min.
Round to the nearest ft./min.
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for this case we have that by definition, the surface area of a cylinder is given by:

where:

r: it is the radius of the cylinder

h: it is the height of the cylinder

we can also rewrite it as:

where:

la: it's the lateral area

ba: area of the base

option a

is the anwser b. (-13)?

b and c are the correct answers.

good luck on the quiz! : d