Convert the given system of equations to matrix form
2. use row operations to put the matrix in echelon form.
3. find the solutions set and put in vector form.
x+y+w+z-3u=5
x-y-2w+z+2u=4 2x+0+w-z+u=3

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *