Matematika A - 2024. probna, 16.

$18\pi {\mathrm{c}\mathrm{m}}^{2}18\; \backslash pi\; \backslash mathrm\{~cm\}^\{2\}$

$19\pi {\mathrm{c}\mathrm{m}}^{2}19\; \backslash pi\; \backslash mathrm\{~cm\}^\{2\}$

$21\pi {\mathrm{c}\mathrm{m}}^{2}21\; \backslash pi\; \backslash mathrm\{~cm\}^\{2\}$

$22\pi {\mathrm{c}\mathrm{m}}^{2}22\; \backslash pi\; \backslash mathrm\{~cm\}^\{2\}$