Question

use function notation to represent each of the following: the area (in cm²) of a circle whose radius is 2.8 cm?

Answer 1

Explanation:

Area formula for a circle is A(r) = π*
`r^(2)`

r = 2.8 cm

Area is 24.63 sq cm (rounded)

In function notation area of circle is A(2.8 ) =
`\pi *(2.8)^(2)` = 7.84*
`\pi` sq. cm.