The perimeter of parallelogram is 280 cm . If a pair of adjacent angles are in the ratio 3:4 . Find all sides.
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3x+4x+x=180°
8x=180°
x=180°/8
x=22.5°
3x=3×22.5=67.5°
4x=4×22.5=90°
x=22.5°
8x=180°
x=180°/8
x=22.5°
3x=3×22.5=67.5°
4x=4×22.5=90°
x=22.5°
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