Asked by muneca
You have a pool that measure 15 yards by 10 yards. You want to build a deck around all four sides of the pool and you want to increase the total area to 250 square yards. What is the width of the deck?
Answers
Answered by
bobpursley
Total Area= 4w^2 + 2*15w+2*10w=250
2w^2+25w-125=0
w=(-25+-sqrt(625+1000))/4
w=(-25+-sqr(1625)/4=15.3/4
check:
area=4(15.3/4)^2 + 50(15.3/4)=
=250
2w^2+25w-125=0
w=(-25+-sqrt(625+1000))/4
w=(-25+-sqr(1625)/4=15.3/4
check:
area=4(15.3/4)^2 + 50(15.3/4)=
=250
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