One ring in the stonehenge monument was originally made of 30 stones, each about six and a half feet wide, 3 ft thick, and 13 ft tall. what is the approximate volume of the 17th stones that remain today? i'm desperate so me out xd

Scenario: a rectangular plot of ground is 5 meters longer than it is wide. its area is 20,000 square meters. question: what equation will you find the dimensions? note: let w represent the width. options: w(w+5)=20,000 w^2=20,000+5 (w(w+5))/2=20,000 w+2(w+5)=20,000