1. [-/1 Points] DETAILS SMITHNM13 8.1.006. Define T. O x is the ratio of the circumference to the diameter of a circle. O T is the ratio of the diameter to the circumference of a circle. O T is the circumference of the circle. it is equal to half the circumference. O it is the ratio of the circumference to the radius of a circle. Submit Answer 2. [-/1 Points] DETAILS SMITHNM13 8.1.013. Pick the best choice by estimating. Do not measure. The length of a dollar bill is about ? _ inches. Submit Answer 3. [-/2 Points] DETAILS SMITHNM13 8.2.004. Estimate the area of each figure to the nearest square unit. (a) square units ( b ) square units