Question 1014586
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Hi
a pool is rectangular in shape with dimensions a meters by b meters.surrounding the pool is a paved
area d meters wide.what is the area of the paved section.could u please show the working out.

thank u
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(a + 2d)*(b + 2d) - a*b.


If you want, you may open parentheses and get 


2d*(a+b) + 4d^2.