What's the surface area of a cylinder with a radius 3 feet and height of 4 feet?
Given, r = 3 feet and h = 4 feet
The total surface area of the cylinder is obtained by adding the area of the two bases and the area of the curved surface area.
Curved Surface area of the cylinder = length × height
CSA = 2πr × h = 2πrh
Total surface area = πr2 + 2πrh + πr2
= 2πr2 + 2πrh
= 2πr(h + r)
Now in the given question,
Radius = r = 3ft and Height = h = 4ft
Curved surface area = 2π(3)(4) = 24π
Total Surface area = 2(π)(3)(3 + 4) = 42π ≈ 131.94689.
What's the surface area of a cylinder with radius 3 feet and height 4 feet?
The surface area of a cylinder with radius 3 feet and height 4 feet (i) Curved surface area = 24π (ii) Total surface area = 42π