What is the area of the figure in square millimeters and in square centimeters?

a.
3375 mm² and 33.75 cm²

b.
3375 mm² and 337,500 cm²

c.
2925 mm² and 29.25 cm²

d.
2925 mm² and 292,500 cm²

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.