The the diagram line ab and line ac are tangent to the circle find the length of the radius line dc

Pyotr tchaikovsky sporting goods operates on a 45% overhead based on the selling price, which results in an overhead of $65.34 on the newest version of an air hockey game set. if the air hockey game set costs pyotr tchaikovsky sports $49.32, find the selling price, the markup, and the net profit.

Adam used 1072.4 gallons of water over the course of 7 days. how much water did adam use, on average, each day?

The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle