Find the equation of a parabola with a focus of (0, 9) and directrix y = –9. A. Y= - 1/9x^2
B. Y= 1/36x^2
C. Y= - 1/36^2
D. Y= 1/9^2

answer: d. $20

step-by-step explanation:

just took the test

20

step-by-step explanation:

d) 30 units^2

area of rectangle = l × b

we know,

length = 10 unit

breadth = 3 unit

applying the formula,

= l × b

= 10 × 3

= 30 unit^2

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30005

yes ok