Question

need help.

Answer 1

need help with the attach problem because I got it wrong. Also I have attach my work with it

Answer 2

Area = 910pi
Area = r^2pi
r1 = sqrt(910) = 30.1662

910+18 = 928
area =r^2pi
928 = r^2pi
r2 = 4sqrt(58)

r2-r1=0.2968

You should use exact values rather than your rounded values :)
I hope this is right.

Answer 3

so its has to answer choice 3, right?

Answer 4

I hope so. I followed the same steps as you, except I used exact values rather than rounded values.

\[4\sqrt{58}-\sqrt{910} \approx0.2968\]