<span>this is the answer = "center center" I hope this help.. </span>
When it's by the magnetic poles
circle
1. area=π*R square
2.circumference=2πr
sphere
1. curve surface area=4*π*R square
2. volume =4/3*π*R^3
First subtract the three from both sides
L=w+9
p=2w+2l
p=2w+2*(w+9)
p=2w+2w+2*9
p=4w+18
4w+18=38
4w=38-18
4w=20
w=20:4
w=5 in
l=5+9=14 in
