Question

Calculeaza aria si volumul unei sfere cu raza de 4 cm.

Answer 1

 A=4\pi R^{2} \\ A=4 \pi 4^{2} \\ A=4 \pi 16 \\ A=64 \pi \\ V= \frac{4 \pi R^{3} }{3} \\ V= \frac{4 \pi 4^{3} }{3} \\ V= \frac{256 \pi }{3} [/tex]