What is the smallest number of degrees needed to rotate a regular hexagon around its center onto itself?

In a two-digit number the units' digit is 7 more than the tens' digit. the number with digits reversed is three times as large as the sum of the original number and the two digits. find the number.

Mrs.sling bought a pound of green beans for $1.80. how much will mrs.tennison pay for 3 1/2 pounds of green beans?

Lana's family entered a 5-kilometer race lana's average step length is about 0.5 meter how many steps will she need to take the finish