One diagonal of a rhombus is four times the length of the other diagonal. the area of the rhombus is 98 square feet. identify an equation that can be used to find the length of each diagonal. let $x$ represent the length of the shorter diagonal. then find the length of each diagonal. round decimal answers to the nearest tenth. $2x=98$ $2x^2=98$ $x^2=98$ $\frac{1}{2}x^2=98$ question 2