Enter the amount to be converted in the box to the left of the currency and press the convert button. To show Bangladeshi Taka and just one other currency click on any other currency. The Bangladeshi Taka is the currency in Bangladesh (BD, BGD). The symbol for BDT can be written Tk.
Mass, Size, and Density of the Universe. The mass density of visible matter (i.e., galaxies) in the Universe is estimated at 3e-28 kg/m^3 (3e-31 times the mass density of water). The radius of the visible Universe is estimated at 1.7e26 m (18 thousand million lightyears) plus or minus 20 percent or so.
The mass of the oceans is approximately 1.35 Ã 10 metric tons, or about 1/4400 of Earth's total mass. The oceans cover an area of 7014361800000000000â 3.618Ã108 km2 with a mean depth of 7003368200000000000â 3682 m, resulting in an estimated volume of 7018133200000000000â 1.332Ã109 km3.