This round table can seat about 8 people.

Solution: Since the diameter of the round table is 1.8 meters,

then the circumference of the round table = π x diameter = 3.14 x 1.8 meters = 5.652 meters = 565.2 centimeters.

And each person occupies a space of 70 centimeters,

then the number of people who can sit at the round table is 565.2 centimeters ÷ 70 centimeters ≈ 8.

That is, the round table can seat about 8 people.

Expanded Information:

1. Formula for a Circle

If the radius of a circle is r, the formula for a circle is as follows.

The radius of the circle R = 2*r, the circumference of the circle = 2π*r = π*R, and the area of the circle S = π*r^2.

2. Properties of the circle

(1) A circle is an axisymmetric figure, and its axis of symmetry is any straight line passing through the center of the circle. The circle is also a centrosymmetric figure whose center of symmetry is the center of the circle.

(2) If two circles intersect, then the line segment (a straight line is acceptable) connecting the centers of the two circles bisects the common *** chord perpendicularly.

3. Calculation of division

(1) Long division

(2) Short division

Baidu Wikipedia-Circle

Baidu Wikipedia-Division