## College Algebra (10th Edition)

Perimeter = 2(length + width) Perimeter = 42 meters Length = 2width (given) Replacing in formula Perimeter = 2((2w) + w) 42 = 2( 3w) $\frac{42}{2}$ = 3w 21 = 3w $\frac{21}{3}$ = width Width = 7 Length = 2 x 7 = 14