How did Mormon settlers improve the infrastructure of Utah? 1.They built successful canals and ditches of irrigation
2.They built trading outposts to promote fur trapping
3. They built missions to convert American Indians
4. They built paved roadways to encourage migration from Canada

2. they build trading posts to promote fur trapping

Explanation:

i remember my teacher saying something about them being big intro trading, so i hope this is right

because mexico wanted to choose a centralized location

254.34

step-by-step explanation:

the formula for area of a circle is given by

a = pi * r^2

a = pi * 9^2

a = 81*pi

using 3.14 as an approximation for pi

a = 3.14*81

a = 254.34