Răspuns :
(6√2)↑2 +(6√2)↑2= 144
√144=12 asta e diametrul
12/2=6 raza
L cerc= 2* pi * raza
AB=2*pi * raza / 4= 3* pi
√144=12 asta e diametrul
12/2=6 raza
L cerc= 2* pi * raza
AB=2*pi * raza / 4= 3* pi
R=l√2/2
R=6√2×√2/2=12/2=6 cm
n°=90°
Larc=πRn°/180°
Larc=π×6×90/180
L=3π cm sau L=3×3,14=9,42 cm
R=6√2×√2/2=12/2=6 cm
n°=90°
Larc=πRn°/180°
Larc=π×6×90/180
L=3π cm sau L=3×3,14=9,42 cm