Posted by Rebecca on Tuesday, May 31, 2011 at 11:23am.
The playing surface in the game of curling is a rectangular sheet of ice with an area of about 225 m^2. The width is about 40m less than the length. Find the approximate dimensions of the playing surface.
How would i solve this?

gr10 math  Henry, Wednesday, June 1, 2011 at 4:02pm
Length = L meters.
Width = (L40) Meters.
L * (L40) = 225m^2,
L^2  40L = 225,
L^2  40L  225 = 0,
(L5)(L+45) = 0,

gr10 math  Henry, Wednesday, June 1, 2011 at 4:11pm
Length = L meters.
Width = (L40) Meters.
L * (L40) = 225m^2,
L^2  40L = 225,
L^2  40L  225 = 0,
(L+5)(L45) = 0,
L+5 = 0,
L = 5.
L45 = 0,
L=45.
Choose positive value of L:
L = 45m = Length.
Width = L40 = 4540 = 5m.
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