A solid sphere has a temperature of \( 773 \mathrm{~K} \). The sphere is melted down and recast ...

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A solid sphere has a temperature of \( 773 \mathrm{~K} \). The sphere is melted down and recast into a cube that has the same emissivity and emits the same radiant power as the sphere. What is the cube's temperature?
(A) \( 959 \mathrm{~K} \)
(B) \( 816 \mathrm{~K} \)
(C) \( 732 \mathrm{~K} \)
(D) \( 623 \mathrm{~K} \)
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