Question

Find the total surface area of a hollow cylinder, with :

•Inner radius (r) = 3.2 cm
•Thickness (outer radius / R) = 0.8 cm
•Height = 7cm

Give a step-by-step explanation
Thank you ​

Answer 1

Answer:

2πr(h+r)

Step-by-step explanation:

The formula to calculate the total surface area of a cylinder is given as, the total surface area of cylinder = 2πr(h + r), while the curved surface area of cylinder formula is, curved/lateral surface area of cylinder = 2πrh, where 'r' is the radius of the base and 'h' is the height of the cylinder.