Mathematics
Grade9
Easy

Question

Two congruent equilateral triangles with sides of length 1 are connected so that they share a side. Each triangle has a height of h. Express the area of the shape in terms of h.

  1. h2
  2. h over 2
  3. h
  4. 2h

hintHint:

draw the figure as described to get a clear picture of the problem.

The correct answer is: h


    The 2 congruent triangles form a parallelogram when connected with base length = 1 and height = h
    We know that area of a parallelogram = base x height
    = 1 x h = h
    Hence, the area of the figure is h sq units.


    the above stated problem can be better understood with this picture.

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