Question

Numai cele încercuite.dau coroană

Answer 1

COROANA TE ROG!!!

^2 = la puterea a doua

sqrt = radical

* = inmultit

f)

At=48cm^2

At=6*l^2

l^2=8=2*sqrt(2) cm

d=l*sqrt(3)

d=2*sqrt(2)*sqrt(3)=2*sqrt(6) cm

V=l^3

V=(2*sqrt(2))^3=2^3*sqr(2)^3=8*2*sqrt(2)=16*sqrt(2) cm^3

g)

V=27cm^3

V=l^3

l=3 cm

d=l*sqrt(3)

d=3*sqrt(3)

At=6*l^2

At=6*3^2=54 cm^3