#### Answer

(a) $A = 201~ft^2$
(b) 3 quarts
(c) $47.67

#### Work Step by Step

(a) We can find the area:
$A = \pi~r^2$
$A = (\pi)(8~ft)^2$
$A = 201~ft^2$
(b) We can find the number of quarts required:
$\frac{201~ft^2}{70~ft^2/quart} = 2.9$
Since paint is sold in quarts, we need to buy 3 quarts of paint.
(c) We can find the cost:
$cost = (\$15.89)(3) = \$47.67$