34.如右圖矩形斷面,x轴及y轴經過此斷面之形心0,請問下列敘述 何者正確?(A)此斷面對x軸慣性矩Ix =36 cm4(B)此斷面對y轴慣性矩Iy =64 cm4(C)此斷面對x5轴慣性矩Ix,=36cm4(D)此斷面對y5轴慣性矩Iy’=16cm4