#1 Tilly is covering a can with contact paper, not
including its top and bottom.
The can measures 8 inches
high and has a radius of 2
inches. How much paper
does she need?

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.