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DaiDai8328
25.08.2019 •
Mathematics
Basically only on the facts in the diagram, which triangle criterion can you use to prove that triangle abc and abd are congruent
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Ответ:
Ответ:
When finding the area of a circle, we have to use the formula A = πr².
But we don't know what the radius is, but we know what the diameter is.
The radius is half of the diameter.
So to find do the area, we need to divide the known diameter, (250) by 2.
250 / 2 ===> 125.
Now we have A = π125².
Square 125, and then multiply that by pi, or 3.14
125 * 125 (125²) ===> 15625.
Multiply 15625 by 3.14 (pi)
15625 * 3.14 ≈ 49062.5
Your answer is B.
Hope this helped!! ☺♥