Acircle has circumference c and diameter d. which expression is equivalent to pi?

Any is very appreciated! (picture is provided below)not sure how to do this at all won't lie

Consider the function f(x)=-5x+3 what is f(-2)

Kate is arranging new furniture in her rectangular sitting room. she has mapped the arrangement on a coordinate pane. a, b and c represent the sofas, v1 and v2 are decorative vases and aq the aquarium. find the distance between v1 and the aquarium. any body you