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.