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Question


If ABCD is a parallelogram such that AC=10 inch and BD=8 inch then the lengths of OA and OB will be and respectively.

A
3 inch
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B
4 inch
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C
5 inch
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D
6 inch
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Solution

The correct option is C 5 inch

Given: ABCD is a parallelogram
AC=10 inch and BD=8 inch

Now, as per the figure, AC and BD are diagonals of parallelogram ABCD which intersets at point O.

As we know, diagonals of parallelogram are bisected at their point of intersection. Therefore, diagonals AC and BD will be bisected at point O.
OA=OC=AC2

OA=102=5×22=5 inch

Similarly, OB=OD=BD2

OB=82=4×22=4 inch

Therefore, OA=5 inch and
OB=4 inch

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