Question

E cineva online? Daca da atunci sa ma ajute cu problema asta :

Se da un con circlar dreptunghic cu R= 3cm si h= 4cm
Sa se afle :
Al , At , V

Answer 1

Aflam G : G=$\sqrt{4 ^{2}+3^{2} }$=$\sqrt{16·9}$=$\sqrt{25}$=5
Al=$\pi$·R·G=3·5$\pi$=15$\pi$
At=$\pi$R(R+G)=3(3+5)$\pi$=24$\pi$
V=$\frac{Ab·h}{3}$=$\pi$$R^{2}$·4/3=12$\pi$