The carpenter should make a round table that can sit 10 people. Each seat is about 62.8 cm wide. How many square meters is this round table?

In this problem, we must first know its circumference, and then calculate the area of this round table through the circumference.

Its circumference is: 62.8×10 = 628 ㎝.

∫ Area of circle = radius × radius ×3. 14,

Circumference = diameter ×3. 14, diameter = circumference ÷3. 14, radius = diameter ÷2.

The radius of this round table is 62.8× 10÷3. 14÷2.

Therefore, the following formula can be obtained:

﹙62.8× 10÷3. 14÷2﹚×﹙62.8× 10÷3. 14÷2﹚×3. 14

=﹙628÷3. 14÷2﹚×﹙628÷3. 14÷2﹚×3. 14

= 100× 100×3. 14

= 10000×3. 14

=3 1400﹙㎝? ﹚

=3. 14﹙㎡﹚ ﹙ 1㎡= 10000㎝? ﹚

A: The area of this round table is 3. 14 square meter.