Around barbecue pit is 2 meters in diameter. what is the distance around the barbecue pit? a) 12.56 meters. b) 18.84 meters. c) 6.28 meters. d) 3.14

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?