Achild wanders slowly down a circular staircase from the top of a tower. with x, y,z in feet and the origin at the base of the tower, her position t minutes from the start is given by x=30cost, y=30sint, z=110−5t. (a) how tall is the tower? height = 110 ft (b) when does the child reach the bottom? time = 22 minutes (c) what is her speed at time t? speed = 5*sqrt(37) ft/min (d) what is her acceleration at time t? acceleration = sqrt(30^2(cos(t)^2i+sin(t)^2j)) ft/min2

side side side

side angle angle

angle side angle

side angle side

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answer: input the dimensions of the room to be painted. click the button to calculate the amount of paint and man-hours needed for this job.

interior paint coverage depends on the brand of paint used. the coverage amount is listed on the label of the paint can. use this to adjust the values in the paint coverage section below. paint usually is applied at 350 to 400 square feet per gallon (primer at 200 to 300 square feet per gallon).

step-by-step explanation:

the answer is 8/21

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