----- Nội dung dịch tự động từ ảnh ----- For a container with a fixed volume, the height, h cm, and the square of its base radius, rem, are in inverse proportion. When the height is 8 cm, the radius is 10 cm. (a) (b) Find the height when the base radius is 4 cm. Find the base radius when the height is 12.5 cm.