The area of parallelogram ABCD is 72Y cm².
Calculate DC.
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The area of parallelogram ABCD is 72Y cm².
Calculate DC.
To find the side length of parallelogram with an area of :
Therefore, the length of is .
Calculate the area of the parallelogram according to the data in the diagram.
The base can be any side of the parallelogram, but the height must be the perpendicular distance between parallel sides. Look for the dashed line marked with 9 - that's your height!
The area is given as , which contains the variable y. When you divide , the variable stays in your answer.
Yes! You could use side AD as the base, but then you'd need the perpendicular height to that side. The calculation Area = base × height always works regardless of which side you choose as base.
The variable y represents an unknown value with units of length (cm). It could be any positive number - the relationship between area and sides stays the same regardless of y's actual value.
Multiply your answer by the height: . This matches the given area, so 8y cm is correct!
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