Question

Aflați aria totală a unui cub cu muchii de a) 8 cm b)
$5 \frac{1}{6}cm$
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Answer 1

$a_{t} = 6 \times {l}^{2}$

a) At= 6x8²=6x64=384 (cm²)

$b) a_{t} =6 \times {(5\frac{1}{6} )}^{2} =$

$= 6 \times ( { \frac{31}{6} )}^{2} =$

$= 6 \times \frac{961}{36} =$

$= \frac{961}{6}$