Question

PLEASE HELP

Write and simplify a polynomial expression to find the area of 4 circles. Each circle has a radius of (4a-6)

Answer 1

Answer: 64πa^2-192πa+144

Explanation:

Area of a circle: π •r^2

So then the area would be: 4•π(4a-6)^2

FOIL (4a-6)(4a-6) and get 16a^2-48a+36

Plug it in and get 4•π(16a^2-48a+36)

Distribute pi sign and get 4•(16πa^2-48πa+36π)

Distribute the 4 and you get 64πa^2-192πa+144

Answer: 64πa^2-192πa+144