1.What is the surface area of a cylinder whose radius is 6 dm and height is 20 dm?

2.A house has roof in the form of a square pyramid with base of 9 m and slant height of 5 m. How many square meters are there on the surface of the roof?

3.What is the surface area of a sphere whose diameter is 30 cm?

4.What is the surface area of a cylindrical drum with an open top whose radius and height are 8 dm and 20 dm, respectively?
ibrabrainlinest ko po Jung maayos na answer thank u