1. (205s) If an inversed triangle plane of beight d and base b is Hquid surface a dictance (i.e, depti) of h (as shown in the figure). (1) Pleuse derive to obtain the depth to its centrold of areay (10\%) (2) Plesse derive to obtain the depth to its center of pressure by tta Ss. (10%) [Note] Calculation from Isz is NOT allow. 1. (205s) If an inversed triangle plane of beight d and base b is Hquid surface a dictance (i.e, depti) of h (as shown in the figure). (1) Pleuse derive to obtain the depth to its centrold of areay (10\%) (2) Plesse derive to obtain the depth to its center of pressure by tta Ss. (10%) [Note] Calculation from Isz is NOT allow