bantuin jawab dgn caranya

ma = 2 kg
mb = 1 kg
la = 1 m
lb = 4 - 1 = 3 m
ditanya I = ...?
jawab

I = ma.la² + mb.lb²
I = 2.1² + 1.3²
I = 2 + 9
I = 11 kgm²

jawaban E.