Mile
They are meters to measure
Half the distance across a circle.
Depth is a measure of distance between the surface and the ocean floor.
Measure the distance across the circle and multiply it by pi which is 3.14
That depends how close you measure "the ocean". The closer - the louder! The distance is very important if you measure with a sound pressure level meter.
From Brownsville TX to Van Buren ME is about 2156 miles in a straight line. By road, depending on the route taken is about 2631 miles.
You can measure the distance across the room using a measuring tape, laser distance measurer, or a ruler. Simply extend the measuring tool from one end of the room to the other to get an accurate measurement.
Miles or kilometers.
Going across the Pacific Ocean the distance is 11,342km. That is 7047.6 miles.
Radius is calculated by dividing diameter by two. Measure the distance across the circle then divide it in half for example: You measure the distance across the circle (the diameter) = 6, then 6 divided in half, the radius is 3.
It's probably easier to measure the diameter, i.e., the distance across. Measure that, and divide by 2.