Angle A is circumscribed about circle O.
What is the measure of D?

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

Item 1 solve for s. s+24=90 −114 −66 66 114

Jonathan can type 20 documents in 40 minutes ,and susan can type it in 30 minutes and jack can type it in 24 minutes working together ,how much time will it is take them type the same document