Please help! Chapter test review tomorrow

Find the area of the regular hexagon if a side is 20 cm.

Olive's solar powered scooter travels at a rate of 30 miles per hour. what equation can she use to calculate her distance with relation to the time she traveled? h=hours m=miles 1. h=m+30 2. m=30h 3. m=h+30 4. h=30m

Arectangle has a length of 6cm by 8cm what is the length of a diagonal of the rectangle