Question

If a circle has a radius of 9 cm how do you find the area rounded to the nearest whole number?

Answer 1

`=color(blue)(254 cm^2`

Explanation:

The area of a circle is given by formula:
`color(blue)(pir^2`

`pi` has a constant value of `3.14`

And the radius of the circle is `9cm`

The area `= pir^2 = 3.14 xx (9)^2cm^2`

`=3.14 xx (81)`
`=254.34 cm^2`
`approxcolor(blue)(254 cm^2`