Find the surface area of the cylinder. Round your answer to the nearest tenth

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

The moats separating people from the animals are 5 m wide for lions and 4 m wide for the elephants. if the lion’s moat is 4 m deep, how deep should the elephants’ moat be?

The students in a class were asked how many siblings they have. the data obtained is represented in the dot plot. the number of students who have no siblings is . the number of students who have three or more siblings is .