Bantuin la, smoga yg mau bantu dpet rejeki

sisi 0,9 m = √((1.2)²+(0.9)² = √(1.44+0.81) = √(2.25 = 1.5 m
sisi 0,5 m = √((1.2)²+(0.5)² = √(1.44+0.25)= √(1.69) = 1.3 m
panjang tali minimum
2 x ( 1.5 + 1.3 )
2 x ( 2.8 ) = 5.6 meter (B)