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50.24

Step-by-step explanation:

equation A=pi R^2

r^2 = 4^2 = 16

16*3.14 = 50.24

50.24

Step-by-step explanation:

in the attachment.   i didn't see your choices.   the word which means there is choices.

step-by-step explanation:

(x,y)

x tells you how much left or right you go from the origin

y tells you how much down or up you go from the origin

so for example (-3,2), you go left 3 and up twice. i denoted which of the ordered pairs is which in my graph.