surface area and volume

123456
Across
  1. 2. The formula for the surface area of a sphere (5 letters).
  2. 3. The total area of the surface of a three-dimensional object (6 letters).
  3. 4. The shape with curved surface and two circular bases (7 letters).
  4. 5. The area of the base multiplied by the height, for a cylinder (7 letters).
  5. 6. The amount of space occupied by a 3D shape (7 letters).
Down
  1. 1. The measure of the outer surface of a 3D shape (9 letters)
  2. 4. solid shape with 6 congruent square faces (5 letters).