For a container with a fixed volume

----- 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.