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Iam a rectangle. my perimeter is 60 feet. how much are do i cover?

The volume of a sphere is increased by 6%. calculate the corresponding percentage increased in it area.

The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.