Construction A builder needs to pour a 4-in.-thick concrete slab that is
shaped as shown in the figure.
According to the manufacturer's guidelines for this thickness, approxi-
mately of a bag of concrete mix is required per square foot.
(a) Find the area of the slab.
(b) How many bags of the mix are needed for this job?
(c) At $4.68 per bag, what will be the cost for purchasing the required
amount of mix?
8
16
8