Question

Please can someone answer this for the love of GOD?! Please and I will give you 5 stars or a Thanks?!

Answer 1

4) 120π cm^2

5) 56π cm^2

6) 32π cm^2

Explanation:

Surface Area of Cylinder = 2π
`r^(2)` + (2πr)(height)

(will use variable h for height)

4)

diameter = 8 cm

r = 0.5(diameter) = 0.5(8) = 4 cm

height = 11 cm

2π
`4^(2)` + (2π)(4)(11)

= 2π(16) + 2π(44)

= 32π + 88π

= 120π cm^2

5)

diameter = 8 cm

r = 0.5(diameter) = 0.5(8) = 4 cm

height = 6 cm

2π
`4^(2)` + (2π)(4)(6)

= 2π(16) + 2π(12)

= 32π + 24π

= 56π cm^2

6)

diameter = 6 cm

r = 0.5(diameter) = 0.5(6) = 3 cm

height = 7 cm

2π
`3^(2)` + (2π)(3)(7)

= 2π(9) + 2π(7)

= 18π + 14π

= 32π cm^2