PLS HELP ME I WILL GIVE BRAINLIEST ASAP PLS GRAPH IT AND WRITE A SOLUTION!!

Name the type of angle shown. calculation tip: common types of angles are zero, straight, right, acute, or obtuse.

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?

How can writing phrases as algebraic expressions you solve problems?