keyshlavazquez5118
23.07.2021 •
Mathematics
Which is the equation of a hyperbola with directrices at x = ±3 and foci at (4, 0) and (−4, 0)?
A) x squared over 16 minus y squared over 4 equals 1
B) x squared over 12 minus y squared over 4 equals 1
C) y squared over 16 minus x squared over 4 equals 1
D) y squared over 12 minus x squares over 4 equals 1
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Ответ:
9 m²
Step-by-step explanation:
The area (A) of a sector of a circle is
A = area of circle × fraction of circle
= 72 ×
= 72 ×
= 9 m²