The posted speed limit is 45 miles per hour. Choose all the metric measures that are faster than 45 miles
per hour.

A. 45 km per hour

B. 64.1 km per hour

C. 86.4 km per hour

D. 91 km per hour

E. 112.3 km per hour

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation:

2.2°  

step-by-step explanation:

let θ = the angle of elevation.

tanθ =77/2020

tanθ = 0.038 12

      θ = tan⁻¹0.038 12

      θ = 2.2°