Question

O piramida triunghiulara regulata are latura bazei 10 cm si inaltimea de 9 cm. Aflati volumul.

Answer 1

[tex]V= \frac{Ab*h}{3} \\ Nu \ cunoastem \ aria \ bazei \ asa \ ca \ o \ aflam: \\ Ab= \frac{ l^{2} \sqrt{3} }{4} = \frac{ 10^{2} \sqrt{3} }{4} = \frac{100 \sqrt{3} }{4} = 25 \sqrt{3 } \\ V= \frac{25 \sqrt{3}*9 }{3} =75 \sqrt{3} \\ Succes![/tex]