The question cannot be answered since the base of a cylinder is a circular area whose measurements should be in square units.
Furthermore, the question contradicts itself. If the radius is 4 cm then the base cannot be 50 cm^2 and if the base is 50 cm^2 then the radius cannot be 4 cm.
Finally, there is no information on the height of the cylinder.
13,194.7cm2
The answer will depend on whether the question concerns the volume or surface area.
A cylinder with a radius of 5 centimeters and height of 9 centimeters
The height of a cylinder with the radius of 7 and surface area of 550 is 5.51
The surface area of a cylinder with a radius 2m and 9m height is 138.23m2
The surface area of a cylinder with a radius of 6ft and a height of 7ft is 490.09ft2
The height of a cylinder with a radius of 8 and a surface area of 954.56 is 10.99
The surface area of a cylinder with a radius of 3.8cm and a height of 11cm is 353.37cm2
The surface area of a cylinder with a radius of 15in and a height of 34in is 4,618.14in2
A cylinder with a diameter of 22 centimeters and a height of 2.5 centimeters has a surface area of 933.05cm2
The surface area of a cylinder that has a height of 7 centimeters and a diameter of 8 centimeters is 276.46cm2
If cylinder radius and cylinder length are known : (pi = 3.141592654 . . . ) > Surface area = ( (2 * pi * radius) * length )