I think the greatest possible error that may occur in this kind of question is how this measurements are measured and the units is either correct or not. The factor that you should consider in a measurement is first the accuracy, second is the unit and third is the correct conversion.
The correct answer should be 280 if not I'm srry
Answer:
Step-by-step explanation:
Hello, look the graphic
Best regards
450 percent of increase because 1,650 - 1,200 = 450
Answer:
<h2>11.72cm</h2>
Step-by-step explanation:
Given a chord of distance of 15cm, if it is 9cm from the center of a circle, this means that the 9cm length will be projecting from the centre of the circle perpendicular to the chord and passing through its centre.
Since the radius of a circle is a line that is drawn from the centre of a circle to ts circumference, the set up will form a right angles triangle within the circle with the hypotenuse as the radius and the other two sides as the opposite and adjacent respectively. Using the Pythagoras theorem to get the length of the radius (hypotenuse);
hyp² = opp² + adj²
Let the opposite be the 9cm length
Adjacent will be half of the chord length = 15/2 = 7.5cm
Substituting this values into the formula we will have;
hyp² = 9² + 7.5²
hyp² = 81+56.25
hyp² = 137.25
hyp² = √137.25
hyp = 11.72
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<em>Hence the radius of the circle is approximately 11.72 cm long</em>