## Basic College Mathematics (10th Edition)

Estimate: 20 $\times$ 10 = 200 $ft^{2}$ Exact = 252 $ft^{2}$
We need to find the Area (which is rectange). Area = length $\times$ width Let's First Find Estimate: length = 18 (Round off to) 20 width =(9+5) = 14 (Round off to) 10 Estimate: Area: 20 $\times$ 10 = 200 $ft^{2}$ Now Let's find Exact: Area= 18 $\times$ 14 = 252 $ft^{2}$