From left to right, they show US presidents George Washington, Thomas Jefferson, Theodore Roosevelt and Abraham Lincoln.
trapezoids
Carving the figures into Mount Rushmore took 14 years, October 4, 1927 to October 31, 1941.
4 significant figures.
George Washington, Thomas Jefferson, Theodore Roosevelt, and Abraham Lincoln are the figures who are portrayed on Mount Rushmore (respectively, from the viewers left to right).
4 significant figures.
Where the 4-dimensional figures are analogous to their 3-dimensional counterparts, the 4-d name is usually obtained by using the prefix "hyper". This does not distinguish between a 4-d figure or one in higher dimensions but, if necessary, the name can include that information. For example, 4-dimensional hyper-cube.
4
There are 3 significant figures in 94.2.
Mount Rushmore is in Keystone, South Dakota. The 4 Presidents whose faces are carved into the mountain are: George Washington, Thomas Jefferson, Abraham Lincoln, and Theodore Roosevelt. There will Never be anymore faces added to the monument. Many people have suggested adding another face to the monument, but, that will Never happen.
4 significant figures.
4 significant figures.
19.6754 to 4 significant figures is 19.68