Question

Mark wants to find the area of a circle with a diameter of 6 cm. Which expressions can he use to find the area of the circle in square centimeters? Choose all the correct answers.

a.3^2*pi
b.6*pi
c.2*3*pi
d.3*3*pi
e.6*pi

Answer 1

B and C

(I'm not sure if b and e are supposed to be the same though) if they are then, b, c, and e

Answer 2

The correct options are Option A and Option D

Explanation:

Mark wants to find the area of a circle with a diameter of 6 cm.

We need to find the expressions can he use to find the area of the circle in square centimetres?

The formula used to find area of circle is:
`Area=\pi \:r^2`

We are given Diameter = 6 cm

Radius = Diameter/2 = 6/2 = 3 cm

We get radius = 3cm

Now, putting values and finding area

`Area=\pi \:r^2\\Area=\pi \:(3)^2\\Area=3^2\:\pi`

We can also write it as:

`Area=3*3*\:\pi`

So, correct options are Option A and Option D