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Q: How do you determine radius from chord and mid ordinate?
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How do you find radius if you know the chord?

well,first the radius is half of the chord. Radius is the distance from the circle centre to the chord end. The chord is the line joining the ends of the arc. Draw this line. Call the distance from the arc of the circle at its deepest point to the mid point of the chord "c". If extended, this line will go throught the centre of the circle. Call half the length of the chord "y". Then the properties of circles and chords is that c(d-c)=y2 where d is the circle diameter, so that d = y2/c + c. And then radius is half that.


Why is radius greater than apothem?

In a regular polygon, the apothem is a line from the centre to the mid-point of one of the flat sides. The radius is a line from the centre to a corner, which is longer.


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Using a compass determine the direction of south. Using a clock find out the time when the sun is south. For every hour after mid-day you are 15 degrees west of the point where the sun is south at mid-day. The clock should be set to mid-day when the sun is at longitude zero to get absolute values rather than relative values.


Is it true that Earth's radius and surface area are slowly increasing to accommodate the new oceanic crust being formed at mid-ocean ridges?

This statement is not true.


Earth's radius and surface area are slowly increasing to accommodate the new oceanic crust being formed at mid-oceanic ridges - true or false?

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Earth's radius and surface area are slowly increasing to accommodate the new oceanic crust being formed at mid-ocean ridges. True or False?

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How did scientists determine that the age of rocks farther from the mid-ocean ridge were older?

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How does the golden ratio relate to platonic solids?

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What is the equation of a circle whose diameter's end points are at 2 -3 and 8 7?

The mid point of the diameter is the circle's centre: Mid point of (2, -3) and (8, 7) is ((2 + 8)/2, (-3 + 7)/2) = (5, 2) The radius is half the diameter, but as the equation for a circle requires the radius squared: radius = diameter/2 → radius² = diameter² / 4 Diameter (and diameter²) can be found using Pythagoras: diameter² = change_in_x² + change_in_y² = (8 - 2)² + (7 - -3)² = 6² + 10² = 136 → radius² = 136/4 = 34 Circle with centre (X, Y) and radius r has equation: (x - X)² + (y - Y)² = r² → (x - 5)² + (y - 2)² = 34 → x² -10x + 25 + y² - 4y + 4 = 34 → x² + y² - 10x - 4x - 5 = 0


How can I check if a car is insured for free?

To check your MID status for free if you are not aware. You can run a free DVLA car insurance check to determine your tax status.