Two adjacent sides of a parallelogram are in the ratio 3:6. If smaller side is 45 cm. Find the
perimeter of the parallelogram.
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Answer:
Let the two adjacent sides of the parallelogram be 3x and 4x Then
2(3x+4x)=105
⇒14x=105.
⇒x=7.5
∴ The two sides are 3×7.5 cm and 4×7.5 cm
i.e, 22.5 cm and 30 cm
Area of the parallelogram = base x altitude
= 30 cm × 15cm = 450cm
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