Răspuns :
L = lungimea gardului = BA+AD+DC + L (arc.CMB)=
= 3× 6(m) + (2πR : 2) =
= 18 (m) + π·(6m:2) =
↓
= 18(m) + 3,14×3(m) ≈ 27,42 (m)
= 3× 6(m) + (2πR : 2) =
= 18 (m) + π·(6m:2) =
↓
= 18(m) + 3,14×3(m) ≈ 27,42 (m)
Lungime cerc =π*Diametru
Arc BMC, semicerc
deci:
Lungime gard=3laturi patrat +π*BC/2=3*6+6π/2=18+3π≈27,42m
Arc BMC, semicerc
deci:
Lungime gard=3laturi patrat +π*BC/2=3*6+6π/2=18+3π≈27,42m