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Posted by **cris** on Sunday, February 26, 2012 at 7:44pm.

- math -
**bobpursley**, Sunday, February 26, 2012 at 7:58pmL=W+10

area= LW=375

375=W(W+10)

w^2+10W-375=0

completing the square

W^2+10w+25=400

(w+5)=20

w=15,L=25

- math -
**Reiny**, Sunday, February 26, 2012 at 8:01pmwidth --- x ft

length -- x+10 ft

solve

x(x+10) = 375

x^2 + 10x - 375 = 0

(x+25)(x-15) = 0

x = 15 or x = a negative

width: 15 ft

length : 25 ft

check: 15x25 = 375

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