2.82 +.5 x - 2.82<6.32
Solve for x

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

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?

Measure a and b and find their sum. how are the angles related?