The diameter of a semicircle is 8 kilometers. what is the semicircle's radius?

What is the value of the expression 9+n/3-6 when n = 12? 1. 5. 7. 12.

Aplot of land has been surveyed for a new housing development with borders ab, bc, dc, and da. the plot of land is a right trapezoid with a height of 60 feet and an opposite leg length of 65 feet

What is the quotient of m^6/5 ÷ 5/m^2? assume m does not equal pl