Pre Calculus

Please I need help​

How do you multiply a mixed fraction by a regular fraction

A. 127 cm^2 b. 144.5 cm^2 c. 172 cm^2 d. 50 cm^2

5. which description does not guarantee that a quadrilateral is a squar ajo is a parallelogram with perpendicular diagonals 0% has all sides congruent and all angles congruent o has all right angles and has all sides congruent 10% is both a rectangle and a rhombus 30%