Answer:
36π in^2
Step-by-step explanation:
The formula for calculating area of a circle is π×r^2
since the radius is given as 6
π × 6^2 = 36π in^2
The answer is 3rd point, 36π in²
Given that thr formula of area of circle is A = π×radius². Then you can substitute the following values into the formula:
radius = 6 in
A = π × 6²
= 36π in²
Given
x - = 9 ← square both sides
(x - )² = 9²
x² - 2 + = 81 ( add 2 to both sides )
x² + = 83
Now
(x + )² = x² + + 2, thus
x² + = 83 + 2 = 85
(x + )²= 85 ( take the square root of both sides)
x + =
4,443,000,000 or 4.443 * 10^9 km.
Neptune's distance from the sun = 4.5 * 10^9
= 4,500,000,000 km.
The required difference is
4,500,000,000 - 57,000,000
= 4,443,000,000 or 4.443 * 10^9.