Question

BOOM

Answer 1

@phi @ganeshie8 @dan815 @DanJS @Hero @Prosper2win

Answer 2

@welshfella @Elsa213 @RedNeckOutLaw @taramgrant0543664 @yomamabf @uybuyvf @OGKeith

Answer 3

Find the area of the circle of spilled paint as a function of time, or A[r(t)].

to do that , start with the formula for the area
\[ A = \pi \ r^2\]
now erase the r and put in its place (3t)
can you do that ?

Answer 4

A=π3t^2

Answer 5

Part A:
π(3t)^2
(3.14)(9)(t^2)
28.26t^2

Part B:
28.26 x 10^2=2826

I got this but i don't know if its right

Answer 6

almost. remember that "3t" is r so you should put in parens (3t)^2
(which means 3*t*3*t or 9*t*t or 9*t^2)

Answer 7

so
Part A:
π(3t)^2
(3.14)(9t^2)
28.26t^2

Answer 8

yes. all of that looks ok
but they may want you to leave it as pi in part A
(that is more accurate way to show the formula)
so
\[ A(t)= 9 \pi t^2 \]

Answer 9

in part B they say you can use 3.14 , so now you can do
A(10)= 9*3.14*10^2
which will simplify to your answer 2826

Answer 10

Oh ok so i will just write it both ways

Answer 11

Thank you so much!! :)