The perimeter of a parallelogram is 60cm, its long side is 4 times of the short side, and the height of a parallelogram is 6cm

Sum of two adjacent sides: 60 △ 2 = 30
Length of short side: 30 ÷ (4 + 1) = 6
Long side: 6 × 4 = 24
Area of parallelogram: 24 × 6 = 144 (square centimeter)

It is known that the perimeter of a parallelogram is 40 cm, the height of the parallelogram is 4 cm when viewed horizontally, and the height of the parallelogram is 6 cm when viewed firmly

If the length of one side is x cm, the other side is 20-x cm. 4x = 6 * (20-x), x = 12,
The area of parallelogram is 48 square centimeter

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