There are 1,920 fences posts used in a 12- kilometer stretch of fences how many fences posts are used in 1 kilometer of fence

Can (2,3 and square root 10) be sides ona right triangle?

What is the average diastolic blood pressure for adults

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?