Question

For a Cylinder: radius = 6mm Vertical eight = 9 mm, find Total surface area

Answer 1

Surface area is 2pi r h +. 2pi r squared
2 pi 6 9 + 2 pi 6^2
= 108 pi + 72 pi
= 180 pi

Answer 2

Total surface area is 565.5 mm²

Explanation:

`{ \rm{total \: s.a = 2\pi rh + 2\pi {r}^(2) }} \\ \\ { \rm{total \: s.a = 2\pi r(h + r)}}`

• h is height
• r is radius

`{ \rm{total \: s.a = (2 * 3.14 * 6)(9 + 6)}} \\ \\ { \rm{total \: s.a = 565.5 \: {mm}^(2) }}`