Lets price of article = x
Tax is 8% of article = 0.08x
x+0.08x=7.02
1.08x=7.02
x=7.02/1.08
x=6.5
The retail price is $6.50.
Answer: 721/100 is 7.21 as a simplified fraction.
The radius of the new sphere is 9
The new SA should be 1017.36 in
New volume should be 3052.08in^3