Matematika B - 2015. jesen, 8.

$4\pi {\mathrm{c}\mathrm{m}}^{2}4\; \backslash pi\; \backslash mathrm\{~cm\}^\{2\}$

$8\pi {\mathrm{c}\mathrm{m}}^{2}8\; \backslash pi\; \backslash mathrm\{~cm\}^\{2\}$

$16\pi {\mathrm{c}\mathrm{m}}^{2}16\; \backslash pi\; \backslash mathrm\{~cm\}^\{2\}$

$32\pi {\mathrm{c}\mathrm{m}}^{2}32\; \backslash pi\; \backslash mathrm\{~cm\}^\{2\}$