whats the area of a cone on top of a half circle if thr code has a volume and the circle has a 10 area?​

Cole says the distance between points (-5,0) and (0,-5)is 5 units. is he correct? explain why or why not.

What is the value of x in this triangle? a. 53° b. 62° c. 65° d. 118°

In chemistry,n molecules of an ideal gas have pressure, volume, and tempersture that stand inthe following relation, where r is constant. solve the equation for n,the number of molecules. pv=nrt