Răspunsuri

2014-06-12T14:52:22+03:00
2014-06-12T15:07:40+03:00
Aria discului =  \pi  r^{2}
a)aria= π 8²=64π
b)aria= π 2√3² =12π
c)aria= π 1,2²=1,44π

d) \frac{3radical5}{2}  ² π

 \frac{45}{4}   \pi

2 4 2