How do I work questions 2-4?

Name the quadrilaterals that have four equal sides.

Find the number of liters in 12.8 gal of gasoline. round to the nearest hundredths

What sums are equal to 6/12? choose all answers that are correct a.6/12+6/12+6/12+6/12+6/12+6/12 b.2/12+1/12+1/12+2/12 c.5/12+1/12 d.1/12+1/12+1/12+3/12 plz : )