In a parallelogram ABCD its diagonals AC and BD intersect at O. If OB = 4.5 cm and AC is 5 cm more than BD, the OA is
please give step by step explanation
please give step by step explanation
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Answer:
OA = 7.5cm
Step-by-step explanation:
The given values :
OB = 4.5 cm
AC = 5 + BD cm
OA = ?
As per the question:
OB = 4.5 cm
BD = 4.5 x 2 = 10 cm [ OB is the half of BD ]
AC = 5cm + BD = 5 + 10cm = 15cm (BD = 10cm)
OA = 15cm/2 = 7.5 cm [ OA is the half of AC]
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