Math problem The radius of the round dining table is 1 m, and the radius of the turntable on it is 80 cm. What is the area of the dining table that is not covered by the turntable?

Solution, get:

1 m == 100 cm

3. 14* 100* 100-3. 14*80*80

==3. 14( 10000-6400)

==3. 14*3600

== 1 1304 cm2

= =1.1304m2

Answer: The area of the dining table not covered by the turntable is 1. 1304 square meters.