12.) 15 + (-15) + 12
2 answers:
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Answer:
Step-by-step explanation:
Answer:
base = 15 units
Step-by-step explanation:
We are given area of a triangle = 52.5 sq. units
Height is given as 7 and we have to find the base.
Using formula for area of triangle:
Area of triangle =
52.5 * 2 = base × 7
105 = base × 7
base = 15