Question

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Answer 1

Respuesta:

Explicación paso a paso:

$Diagonal: l =?$

$l = \sqrt{(40cm)^{2}+(20cm)^{2} +(20cm)^{2} }$

$l= \sqrt{1600cm^{2}+400cm^{2} +400cm^{2} }$

$l = \sqrt{2400cm^{2} } = \sqrt{(4*6*100)cm^{2} }$

$l= 2*10*\sqrt{6} cm$

$l = 20\sqrt{6} cm$

$l = 48.99cm$

Es un número irracional.

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$Diagonal : l =?$

$l= \sqrt{(10cm)^{2}+(10cm)^{2} +(10cm)^{2} }$

$l= \sqrt{100cm^{2}+100cm^{2} +100cm^{2} }$

$l = \sqrt{300cm^{2} } = \sqrt{100* 3 cm^{2} }$

$l = 10\sqrt{3} cm$

$l= 17.32cm$

Es un número irracional.