The graph of the equation below is a circle. What is the length of the radius of the circle?
(X-4)2+(y+12)2=17^2

How to solve a simultaneous equation involved with fractions?

Ineed with number 6 , explain how to get 1978

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank