A rectangle's length is 4 more than twice its
width. If the length and width are each increased
by 3 cm, the area of the new rectangle is
increased by 84 cm.2 Find the dimensions of the
original rectangle.
A rectangular swimming pool is 9 meters longer than
it is wide. It is bordered on all sides by a 2 meter
concrete walk. The area of the pool and walk is
220 m2 greater than the area covered by the pool
alone. What are the dimensions of the pool?