I need urgent help with this one

Solve the equation w^3 = 1,000 i honestly dont know how to punch this into a calculator pls

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?

What is the graph of the absolute value equation ? y=|x|-5