check markLesson 2-6, Check Skills You'll Need

(For help, go to Lesson 1-2, Lesson 1-4, and Lesson 1-6.)

Evaluate each formula for the values given.

  1. distance: d = rt, when r = 60 mi/h and t = 3 h
    1. 180 mi
    2. 63 mi
    3. 3600 h
    4. 360 h
  2. perimeter of a rectangle: P = 2l+ 2w, when l = 11 cm, and w = 5 cm
    1. 16 cm
    2. 55 cm
    3. 32 cm
    4. 27 cm
  3. area of a triangle: A = 1/2 bh, when b = 8 m and h = 7 m
    1. 1/112 m2
    2. 28 m2
    3. 56 m2
    4. 7.5 m

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