Respuesta :

choixongdong
4)
C = 2pi r
C = 2 x 3.14 x (3.7)
C = 23.236

answer is C. 23.236 in

5)
A = pi r^2        r = 16.8/2 = 8.4
A = 3.15 (8.4)^2
A = 3.14 (70.56)
A = 221.56

answer is B.  221.56 m^2