You can put this solution on YOUR website! A RHOMBUS IS A 4 EQUALLY SIDED FIGURE. DIAGONALS OF A RHOMBUS FORM RIGHT ANGLES. THUS THE DIAGONALS FORM 4 EQUAL RIGHT ANGLE TRIANGLES WITH THE INNER SIDES EQUAL TO 1/2 THE DIAGONALS. THUS THE SMALLER SIDES OF THESE TRIANGLES ARE 3 & 4 CENTIMETERS. THUS THE RIGHT TRIANGLE IS A^2=B^2=C62 OR 3^2+4^4=C^2 OR 9+16=C62 OR C=5 THUS THE HYPOTENUSE OF THESE 4 EQUAL TRIANGLES IS 5 CENTIMETERS. SEEING AS ALL SIDES ARE EQUAL IN A RHOMBUS THEN ALL SIDES ARE 5 CENTIMETERS.