V=4[tex] \pi [/tex] R³ / 3 = 36000 / [tex] \pi [/tex]
=4R³/3 =36000 ( am scapat de [tex] \pi [/tex] ) , ( acum imultesti incrucis)
=4R³ =36000x3
=4R³=108000 / 4
=R³=27000
=R=30 ( am aflat raza)
A=4[tex] \pi [/tex] R²
=4[tex] \pi [/tex] 30²
=4[tex] \pi [/tex] 900
=4x900[tex] \pi [/tex]
=3600[tex] \pi [/tex]
SPER CA TE-AM AJUTAT !