250 multiplied by 18 is 4,500.
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250 x 18 = 4500
If you mean: x²+y²+14x-10y = 250 then: A circle with centre (x0, y0) and radius r has formula (x - x0)² + (y - y0)² = r² x² + y² + 14x - 10y = 250 → x² + (2×7)x + y² + (2×5)y = 250 → x² + (2×7)x + 7² - 7² + y² - (2×5)y + 5² - 5² = 250 → (x + 7)² - 49 + (y - 5)² - 25 = 250 → (x + 7)² + (y - 5)² = 324 → (x - -7)² + (y - 5)² = 18² → The radius of the circle is 18 and its centre is at (-7, 5).
45 is 18 percent of 250.
1 in = 0.0254 m ⇒ 250 in x 250 in = (250 x 0.0254 m) x (250 x 0.0254 m) = 6.35 m x 6.35 m = 40.3225 m2 ≈ 40.3 m2
250 ÷ (3 x 2) =250 ÷ 6 =41.67(250 ÷ 3) x 2 =83.3 x 2 =166.6