Asurveyor determines that the angle of elevation to the top of a building from a point on the ground is 31.4∘. he then moves back 53 feet and determines that the angle of elevation is 26.4∘. what is the height of the building

Awoman has 14 different shirts: 10 white shirts and 4 red shirts. if she randomly chooses 2 shirts to take with her on vacation, then what is the probability that she will choose two white shirts? show your answer in fraction and percent, round to the nearest whole percent.