Question

Aflati volumul unui cub cu muchia de :
a) 10 cm b) 2$\frac{2}{3}$ cm c) 4 , (6) cm

Answer 1

a) $V=l ^{3} =\ \textgreater \ V=10^{3} =1000cm^{3}$
b) $2 \frac{2}{3} = \frac{8}{3} \\ V= (\frac{8}{3})^{3} = \frac{8^{3}}{3^{3}} = \frac{512}{27} cm^{3}$
c) $4 \frac{6}{9} =4 \frac{2}{3} = \frac{14}{3} \\ V= (\frac{14}{3} )^{3}= \frac{14^{3}}{3^{3}} = \frac{2744}{27}$$cm^{3}$