a chord of length 30cm is drawn at a distance of 8 cm from the centre of the circle.find the radius of a circle
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The radius of the given circle is 17 cm
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the chord will be perpendiculars it will form right angled triangle
so r^2= {cord/2}^2 + {distance}^2
=> r^2= {15}^2 + {8}^2
=>r^2= 225 + 64
=>r^2=289
=>r=17
so r^2= {cord/2}^2 + {distance}^2
=> r^2= {15}^2 + {8}^2
=>r^2= 225 + 64
=>r^2=289
=>r=17
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