Aleksandr has a roll of paper that is in the shape of a right circular cylinder. It has a height of 28 cm and a diameter of 15.5 cm. Help Aleksandr solve for the surface area. Use 3.14 for π .(1 point)
Responses
4,234.29 cm2
4,234.29 cm squared
1,508.77 cm2
1,508.77 cm squared
1,362.76 cm2
1,362.76 cm squared
1,739.95 cm2
2(pi)(r^2) + 2(pi)(r)(h)
r = 15.5 cm / 2 = 7.75 cm
Surface area = 2(3.14)(7.75^2) + 2(3.14)(7.75)(28)
Surface area = 2(3.14)(60.0625) + 2(3.14)(217)
Surface area = 2(188.75) + 2(681.38)
Surface area = 377.5 + 1362.76
Surface area = 1740.26 cm^2
Therefore, the surface area of the right circular cylinder is 1,740.26 cm^2, which is closest to the option "1,739.95 cm2".