HEIGHT AND DISTANCE

HEIGHT AND DISTANCE :
14) (A pole has been erected in the center of the circular pond of circumference 44 meter where height of pole above the water level is 14 meter),
I) What type of an angle is formed when top of pole is observed from the circumference of pond?
II)Find the length of radius OC of pond?
III) What would be the angle if the top of pole is observed from the circumference of pond?
IV) What length of wire is necessary to connect the top of pole to points B and C? Find it.
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Very useful