Find the value of the coins after 10, 20, 30, and 60 years

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

What is the area of mnp? 40 m2 60 m2 68 m2 127.5 m2

Rena is building a 1: 180 scale model of a real castle. her model has a rectangular base that is 3 feet wide and 4 feet long what is the area of the base of the actual castle in square feet