Răspuns :
a)A l=64cm²
A l=4•l²
64=4•l²
l²=16
=>l=4
b)V cub =125 cm ³
V cub=l³
125=l³
125|5
25|5
5|5
1
125=5³=l³
=>l=5
A l=4•l²
64=4•l²
l²=16
=>l=4
b)V cub =125 cm ³
V cub=l³
125=l³
125|5
25|5
5|5
1
125=5³=l³
=>l=5