Question

In parallelogram, the diagonals intersect at O. If OA= (2x+15)cm, OC=(10x-9)cm, then AC is ______cm.
a)90
b)75
c)105
d)42​

Answer 1

Answer:

the correct option is d) 42.........

Answer 2

Answer:

42

Step-by-step explanation:

we know in a paralellogram diagonals bisect each other.

OA=OC

2x+15=10x-9

8x=24

x=3

...........

AC=OA+OC

=21+21

=42

(Alternatively->AC=2AO=2×21=42)

Hope it helps you mark as brainliest please