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

same

double

half

four times