use a compash
you can.
The 9 foot ceiling is simply one more foot in height above the previously stated 8 foot ceiling. One could assume that a man who is 8'7" could only comfortably live under a 9 foot ceiling.
It varies. Some have 8 foot ceiling with 1 foot floors=9 foot some have 8 foot ceiling with 2 feet floors=10 feet
A 13-foot circle has an area of 132.73 square feet.
A 16-foot circle has an area of 201.06 square feet.
It depends on what you mean by a 7 foot circle.
The circumference of 5 foot circle is: 15.7
You should clarify whether "1-foot circle" refers to a circle with a radius of 1 foot, a diameter of 1 foot, or a circumference of 1 foot. The circumference of a circle is equal to the diameter times pi (approximately 3.14).
140 feet.
A circle with a 27-foot diameter has an area of 572.56 square feet.
The circumference of a 160-foot circle is: 503 feet.
Area of a circle = pi*radius squared