The area of a triangular-shaped rug is 12 square yards and the height is 3 yards. Find the base.

The area of a triangle is A = (base × height) ÷ 2. Substitute the given area and height: 12 = (base × 3) ÷ 2, so the base is 2 × 12 ÷ 3 = 8 yards. The correct choice is 8 yd.

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