The measure of a leg of an isosceles triangle is twice the measure of its base. If the perimeter of the triangle is 64 units, what is the measure of the base of the triangle?

A. 5.7 units
B. 12.8 units
C. 16.0 units
D. 21.3 units

Someone answer this asap for the length, in feet, of a rectangular rug is represented by the expression 5x² + 2x. the width, in feet, is represented by the expression 3x². which expression represents the perimeter, in feet, of the rug? a. 8x² + 2x b. 8x² + 4x c. 16x² + 2x d. 16x² + 4x