The distance around the inner circle of a rubber tyre is 220 cm.
a. Find the inner radius.
b If the thickness of the tyre is 14cm, find
the distance around the outside of the
Areas of rectangles​

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

An object in geometry with no width, length or height is a(n):

In a small section of a stadium there are 40 spectators watching a game between the cook islands and fiji. they all support at least one of the two teams. 25 spectators support the cook islands and 16 of these support both teams. how many support only fiji?