A student's grade depends on her score on four equally-weighted exams. Her average on the first three exams is 92. What must she
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Answer: 30
Step-by-step explanation:
If we were to draw diagonal BD, then we would create two congruent triangles, and we could find the area of each using the formula .
However, since there are two triangles, we can double this, giving us .
So, the area is