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Answer:
Step-by-step explanation:
Note that 80% is 8 times 10%.
Thus, we could start with "If 10% of a number is 7" and multiply both quantities by 8: "80% of a number is 56."
Think:
10% of a number is 7,
20% is 14,
50% is 35,
70% is 49, and
80% is 56.
Area of a triangle is 0.5* perpendicular height* base
0.5*4*8
Where four is the perpendicular height and eight is the base
Therefore, area is equal to 16
