90 by 156 will make how many yards of table cloth for a rectangular
One and a half yards of 60 inch width fabric.
Since round table cloths are measured on the diameter, not the circumference, you would fold it in half twice, measure 30 inches from the center of the cloth, add 1 1/2 inches for the hem, and that is where you start your cut. You don't measure up from the bottom because you can't be sure if they added the hem before or after their measurement.
4 yards
A table which is 90 inch around its outside (circumference) is 28.648 inches (to 3 dp) across (diameter).
You need at least 4 yards of fabric to make a 70 inch round table cloth. Most people would use close to 6 yards to make the designs that they'd like to.
90 by 156 will make how many yards of table cloth for a rectangular
One and a half yards of 60 inch width fabric.
If you let it hang down about 6 inches on both sides, that would be about right; so I would go with a 72 inch square table cloth.
That would have roughly a 9'' drop all the way around the table.
No it will not fit. It will sit on the table like a large, odd-looking place mat. Tablecloth measurements refer to the exact size of the table cloth, not to the size of table it will fit. For a 96 inch diameter round table, you'll likely need a 120 inch diameter tablecloth to allow for 12 inch overhang all the way around. You can use a 108 inch round, which will give you a 6 inch drop or 120 inch round, which will give you a 12 inch drop or 128 inch round, which will give you a 16 inch drop
Assuming 82 and 72 are in the same system of measurement, yes. But an 82 centimetre table cloth will not fit a 72 inch table.
84 inches round tablecloth gives a drop of 12 inches for 60 inch round table. If you want the drop up to the ground,120 inches round tablecloth is perfect fit. (above tablecloth sizes is applicable only to the std height table 29 inches)
You can comfortably sit 6 at a 54 inch round table.
You don't say what shape of table. However, for a table cloth you need to measure the length and width of the table plus 12" overhang on each side. For example, if your table is rectangular 72" long and 30" wide you'll need fabric 96" long and 54" wide minimum (plus you'll need to add a little extra to allow for hemming; maybe another inch per side). In the event your table is round, you'll need enough fabric for 98" x 98" (hem allowance included).
We're assuming the table and cloth are round? The cloth is a circle with a diameter of 90 inches - 30 from the floor to the table, 30 more across the table, and 30 more to get back down to the floor. The circumference of a circle is pi times the diameter. Do the math!
1 yard = 36in 84in x 1yd/36in = 2.33333 or 2 1/3 yards