To find the area of a triangle, use the formula:
S = 1/2 * a * h, where S is the area, a is the base, h is the height.
Next, we want the height and base to be in the same unit. To do this, let’s translate 7 centimeters to meters:
7 cm = 0.07 m.
Now we can find the area:
S = 1/2 * 20 * 0.07 = 0.7 (m²).
Answer: 0.7 m².
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