Question

I dont get this can someone plz help

Answer 1

Area of a circle is defined by
`\pi r^2`. We can test this by inserting some values of the radius and seeing if they equal the area.

1
pi*(1)^2
=1pi or pi
2
pi*(2)^2
=pi*4 or 4pi
3
pi*(3)^2
=pi*9 or 9pi

As we can see, this formula satisfies the given areas, so it is correct.

:)

Answer 2

The area of a circle is πr^2