To find the area of a circle, you have to use the area formula:
r being your radius
A = 
Substitute 1 in for r
A = 
A = 
Did you ever figure out the answer? I'm trying to work on that same problem as well
Answer:
212.8
Step-by-step explanation:
add the decimals
The slope is 4/5 and the y intercept is 1. To graph the equation start at 1 because that is where the graph crosses the y axis and go up 4 and over to the right 5 since the slope is positive.
The boundaries:
x = 0, y = 8; y = 0, √x³ = = 8, x = 4


= π ( 64 x - 16 * 2 *√x^5 + x^4 / 4 ) =
= π ( 320 - 1024/5 + 64 ) =
179.2 π