The surface area of a sphere is 4πr^2 A sphere has a radius (r) that measures 3cm Use π= 3.142 or 22/7 . Work out the surface area of the sphere to the nearest cm^2

What can you determine about the solutions of this system

What would be the reasons for lines 3 and 4? a. addition property; subtraction property b. addition property; solve c. substitution property; subtraction property d. substitution property; prove

An engineer scale model shows a building that is 3 inches tall. if the scale is 1 inch = 600 feet, how tall is the actual building?