Can someone help me on this chart? the expressions for the perimeter of the rectangle is (4x2)+(2x2) =12
and for the octagon the perimeter is 1.5x8 = 12

please help?

Can someone help me on this chart the expressions for the perimeter of the rectangle is 4x22x2 12 and for the octagon the perimeter is 15x8 12 please help class=