To calculate the area of a circle, which formula should be used?

A. A= π⋅r3

B. A= π⋅d

C. A= 2π⋅r

D. A= π⋅r2

D

Step-by-step explanation:

Area equals pie times radius squared, which makes sense in a weird way since double radius is diameter, so radius times radius is area, well that times pi

i hope this helps u :)

-12 > a

step-by-step explanation:

-11 > 1 + a

subtract 1 from each side

-11 -1> 1 -1+ a

-12 > a

idk

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