To explain scalebldr's otherwise very correct answer a little more you scale linear dimensions by the basic scale factor (1.47 in this case) but you scale AREA's by the SQUARE of the linear factor. So it's correctly 810 x 1.47^2.


And to keep going if you scaled the side of a cube by your 1.47 the surface area of the outside of the cube would be up by 1.47^2 and the volume of the cube would increase by 1.47^3 (cubed).