Step-by-step explanation:

We have,

The total surface area of cylinder =200π cm²

r=5 cm

We know that the total surface area of the cylinder

=2πr(r+h)

So,

2π×5(5+h)=200π

5(5+h)=100

5+h=20

h=15 cm

So, the sum of the r and h

r+h=5+15=20 I'm

pls mark as brainist

Answer:

✨that is your answer friend ✨