The length of a tangent from a point a at distance 5 cm from the center of the circle is 4 cm find the radius of the circle
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Answered by
12
it is firming a right angled triangle so you can use Pythagorean triplet. the answer is 3
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Thanx
heyyy...u hav kept length of tangents as 4 but in question they gav 5...
Okkk
you can replace them the answer will remain the same
Answered by
33
Hi ,
Length of the tangent = l = 4cm
Length from center to the external
point = d = 5cm
Let the radius = r cm
r = √ ( d² - l² )
= √ ( 5² - 4²)
= √ ( 25 - 16 )
= √ 9
= 3
r = 3 cm
I hope this helps you.
: )
Length of the tangent = l = 4cm
Length from center to the external
point = d = 5cm
Let the radius = r cm
r = √ ( d² - l² )
= √ ( 5² - 4²)
= √ ( 25 - 16 )
= √ 9
= 3
r = 3 cm
I hope this helps you.
: )
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