ellipse

hyperbola

parabola

circle

density of metal can′t be determined

metal is twice as dense as water

metal will float in water

metal is twice as dense as unknown fluid

at distance — from the plane base 3r

at distance — from the plane base 3r

at distance — from the plane base 3r

at distance — from the plane base or

right angled triangle

equilateral triangle

square

circle

h/2

J/3

h/6

h/4