Question

please answer the question with explanation ​

Answer 1

Answer:

the correct option here is C 8π$h^{2}$÷9.

Step-by-step explanation:

given that the radius is 1/3 of the height. let us take height as h so radius is h/3. the formula of total surface area of cylinder is 2πr(h+r). putting the values, we get π2×h/3(h/3 + h). on solving,

π×2h/3(h/3 + 3h/3)

= π×2h/3(4h/3)

= π×8$h^{2}$/9

= 8π$h^{2}$/9 sq.units.

if any doubts, you can ask me.