31. Reason in the National Hockey League, the goalie may not play the puck outside the...

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31. Reason in the National Hockey League, the goalie may not play the puck outside the isosceles trapezoid behind the net. The formula for the area of a trapezoid is A = (b ₁ + b₂) h. 4 b₁ hu Height (h) Area = 275 ft² b₂- a. Solve the formula for either base, b₁ or b₂. 31. Reason in the National Hockey League, the goalie may not play the puck outside the isosceles trapezoid behind the net. The formula for the area of a trapezoid is A = (b ₁ + b₂) h. 4 b₁ hu Height (h) Area = 275 ft² b₂- a. Solve the formula for either base, b₁ or b₂.