Apatio in the shape of a semicircle has a diameter of 21 ft. what is the approximate area of the patio, rounded to the nearest square foot? use 3.14 to approximate pi star times. ft2

An architect builds a model of a park in the shape of a rectangle. the model is 40.64 centimeters long and 66.04 centimeters wide. one inch equals 2.54 centimeters. use the ratio table to find the ratio of the length to the sum of the length and width in inches and in simplest form. length 40.64 width 66.04 a. 8: 21 b. 13: 21 c. 21: 13 d. 21: 8