Maria wants to find the surface area of a steel rod that is in the shape of a right circular cylinder. The diameter is 0.50 inches, and the length is 36 inches. What is the surface area? Use 3.14 for π.(1 point)
Responses
56.91 inches2
56.91 inches squared
114.61 inches2
114.61 inches squared
0.39 inches2
0.39 inches squared
56.52 inches2
The surface area of a right circular cylinder can be found using the formula: 2πr^2 + 2πrh, where r is the radius of the circular base and h is the height/length of the cylinder.
Given that the diameter is 0.50 inches, the radius (r) is half of the diameter, so r = 0.25 inches.
Plugging in the values:
Surface area = 2(3.14)(0.25)^2 + 2(3.14)(0.25)(36)
Surface area = 2(3.14)(0.0625) + 2(3.14)(9)
Surface area = 2(0.19625) + 56.52
Surface area = 0.3925 + 56.48
Surface area = 56.91 inches squared
Therefore, the surface area of the steel rod is 56.91 inches squared.