The amount of concrete, c, needed to make a walkway around a circular swimming pool varies directly as the square of the diameter, d, of the pool. Which statement is true? A. If the diameter of the pool is doubled, the amount of concrete needed is multiplied by 2.

B. If the diameter of the pool is doubled, the amount of concrete needed is multiplied by 4.

C. If the diameter of the pool is halved, the amount of concrete needed is multiplied by 2.

D. If the diameter of the pool is halved, the amount of concrete needed is multiplied by 4.

Bradley and kelly are out flying kites at a park one afternoon. a model of bradley and kelly's kites are shown below on the coordinate plane as kites brad and kely, respectively: kites adbr and kely are shown on a coordinate plane. the vertices of adbr are a is at 9, 1; d is at 1, 5; b is at 9, 9; and r i which statement is correct about the two kites? (1 point) they are similar because segment br to segment db is 1: 2 and segment ke to segment yk 1: 2. they are not similar because segment br to segment db is 1: 5 and segment ke to segment yk is 1: 2. correct! they are not similar because segment br to segment db is 1: 2 and segment ke to segment yk is 1: 5. they are similar because segment br to segment db is 1: 5 and segment ke to segment yk is 1: 5.