The perimeter is 22 how much bigger is the longest side than the shortest side

Place the following steps in order to complete the square and solve the quadratic equation,

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.

Lizette is training for a marathon. at 7: 00 she left her house and ran until 8: 30, then she walked until 11: 30. she covered a total distance of 18 miles. her running speed was six miles per hour faster than her walking speed. find her running and walking speeds in miles per hour.