Current location - Recipe Complete Network - Catering franchise - The plan of a residential fitness center is as shown in the figure. The activity area is rectangular, with an area of 200m2 and a length of 20m. The dining area is semicircular.
The plan of a residential fitness center is as shown in the figure. The activity area is rectangular, with an area of 200m2 and a length of 20m. The dining area is semicircular.
Solution: The area of quadrilateral ABCD is 200m2, and AB = 20m.
Then AD= 10 meter,
In rt delta ADe, ad is the hypotenuse,
It is known that AD = 10m, AE = 8m,
Then DE= AD2-AE2=6 = 6m,
Therefore, the diameter of the semicircular dining area is 6 meters.