The diameter of a circle is 3 cm. Find its circumference in terms of pi.

In a circle, a 45° sector has an area of 32π cm2. what is the radius of this circle? 32 cm 12 cm 16 cm 8 cm

Abike shop sells you a bicycle for $63 and a helmet for $21. the total cost is 150% of what the shop spent originally. how much did the shop spend originally? how much profit did the bike shop earn by selling the bicycle and helmet to you ?

Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10