Which formula is used to find the area of a circle when given the radius?(1 point)

Responses

A=r
upper A equals r

A=r2
upper A equals r squared

A=2r
upper A equals 2 r

A=d2

3 answers

A=r2
upper A equals r squared

Which formula is used to find the circumference of a circle when the radius is given?(1 point)
Responses

C=2d
upper C equals 2 d

C=r2
upper C equals r squared

C=r
upper C equals r

C=2r

C=2r

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