Question

Which of the following is the correct formula for finding the area of a circle?(1 point)
Responses

A=πr2
𝐴
=
𝜋
𝑟
2

upper A equals pi r squared

A=C2÷4πA=πd2
𝐴
=
𝐶
2
÷
4
𝜋
𝐴
=
𝜋
𝑑
2

upper A equals upper C squared divided by 4 pi upper A equals pi d squared

A=πd
𝐴
=
𝜋
𝑑

upper A equals pi d

A=2πr

Answer 1

A = πr^2

Reason: The area of a circle is pi times the radius squared. (In terms of diameter d, A = π(d/2)^2 = πd^2/4.) 2πr is the circumference, and πd or πd^2 are incorrect for area.