Find: 80cm =____m.

Find 80 cm = ----- m

1m^2 = ____ cm^2 .

Fill in the blanks : 200 cm = .......... m

A cube with a mass m = 20g wettable by water floats on the surface of water. Each face of the cube is a = 3cm long. Surface tension of water is 70 dyne/cm. The distance of the lower face of the cube from the surface of water is (x+0.3)cm. Find x. (g = 980cm/ s^2 )