A chord is 3cm from the centre of a circle of radius 5cm. The length of the chord is _____?
Answer: 8cm
Explanation
To find the length of the chord, we can use the formula:
Length = 2 * √(r² - d²)
where r is the radius and d is the distance from the center.
Given:
r = 5 cm
d = 3 cm
Length = 2 * √(5² - 3²)
= 2 * √(25 - 9)
= 2 * √16
= 2 * 4
= 8 cm
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