Question 8 of 10 If ris the radius of a circle and dis its diameter, which of the following is an
equivalent formula for the circumference C = 270/?
O A. C = 2nd
B. C=ad
C. C = ard
D. C = ad
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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.

Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square

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