According to Archimedesprinciple, the buoyancy force is equal to the weight of fluid displaced by the submerged portion of the object. For the frustrum of a cone as depicted in the figure, use the Secant method to determine the height, h1 of the portion that is above water.

Employ the following values for your computation: r1 =0.5 m. r2 =1 m, h = 1m , rho_{f} = frustrum density =200 kg/m^ 3 and rho_{w} = water density =1000 kg/m^ 3

Note that the volume of a frustrum is given by: V = (pi*h)/3 * (r1^ 2 + r2^ 2 + r1*r2)