Marinada '21

[lang=hr] Površina presjeka krnjeg stošca ravninom koja prolazi polovištem njegove visine paralelno osnovici jednaka je $225\pi$. Obujam stošca iznosi $2800\pi$, a duljina visine je $12$. Koliki je zbroj promjera osnovki gledanog stošca? [/lang] [lang=en] The cross-sectional area of the plane which is parallel to the base of a truncated cone and which passes through the midpoint of the height of that cone is $ 225 \pi $. The volume of the cone is $ 2800 \pi $, and the length of its height is $ 12 $. What is the sum of the diameters of the bases of that cone? [/lang]