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In CERN , some work is carried out for d...

In CERN , some work is carried out for developing an accurate and fast numerical method that can calculate natural gas flow in a pipeline under non isothermal steady -state conditions .

In Diagram 1, O is the centre of the circle of radius 6 cm and P is the mid -point of the chord AB .The length OP is 3 cm.

The measure of `angleAOB` is :

A

`60^@`

B

`75^@`

C

`120^@`

D

`135^@`

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In CERN , some work is carried out for developing an accurate and fast numerical method that can calculate natural gas flow in a pipeline under non isothermal steady -state conditions . In Diagram 1, O is the centre of the circle of radius 6 cm and P is the mid -point of the chord AB .The length OP is 3 cm. The area (in sq cm ) of DeltaAOB is :

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