The radius of a semicircle is 4 millimeters. What is the semicircle's perimeter?

This race was first held in 1953 on august 16th. every decade the race finishes with a festival. how many years is this?

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?

Credit card a offers an introductory apr of 3.4% for the first three months and standard apr of 15.7% thereafter,