The circumference of a cylinder is not dependent on its height, It's simply how far it is round it. So it's the usual formula of 2pi x r. or 3.142 x 2 x 4.25 = 26.707 of the units you have chosen but not mentioned (inches, cms, mms?).
A cylinder with a radius of 11 units and a height of 12 units has a volume of 4,561.59 units3
A cylinder with a radius of 11 units and a height of 12 units has a volume of 4,561.593 cubic units.
The volume of a cylinder with a radius 11 cm and a height of 7 cm is 665.23 cm3
A cylinder that has a radius of 5 inches and a height of 11 inches has a surface area of 502.65 inches2
11*11*3.14*12=4559.28
Imagine taking the ends off the cylinder, cutting the side down from end to end and unrolling the side; this creates a rectangle with the height of the cylinder along one edge and the circumference of the end along the other. Thus area of side = circumference × height. The ends of the cylinder are circles, thus: area = π × radius² → radius = √(area ÷ π) circumference = 2 × π × radius → circumference = 2 × π × √(area ÷ π) = 2 × √(area × π) → area side = 2 × √(area × π) × height → surface area of cylinder = 2 × area ends + area side → surface area = 2 × 11 units² + 2 × √(11 units² × π) × 11 units → surface area = 22 + 22 × √(11π) units² → surface area ≈ 22 + 129.33 units² ≈ 151 units²
The surface area of a cylinder with a radius of 11 and height of 11 is 1,520.53 units2
The volume of a cylinder 22 height and the diameter of 11 is: 2,090 cubic units.
A cylinder with a radius of 11 units and a height of 12 units has a volume of 4,561.59 units3
A cylinder with a radius of 11 units and a height of 12 units has a volume of 4,561.593 cubic units.
The surface area of a cylinder if the radius is 3 and the height is 11 equals 263.9 square units.
The volume of a cylinder with a radius 11 cm and a height of 7 cm is 665.23 cm3
A cylinder that has a radius of 5 inches and a height of 11 inches has a surface area of 502.65 inches2
11*11*3.14*12=4559.28
The area is 1,520.53 inches2
The question cannot be answered without more information about the base. Specifically, it is necessary to know whether the base has an area of 11 [square] units, a radius of 11 units, a diameter of 11 units or a circumference of 11 units. "A base of eleven" is next to useless.
There are two ends, each of area {pi}r2 and the side which can be worked out by cutting the cylinder down (from end to end) and unrolling; one length is the cylinder height (h), the other is the circumference of the end (2{pi}r), giving 2{pi}rh. Area = 2x({pi}r2) + 2{pi}rh Area ~= 2x3.14x112 + 2x3.14x11x11 Area ~= 1520.5in2