Question
In the given figure, O is the centre of two concentric circles of radii cm and respectively. and are tangents to the outer and inner circle respectively. If , find the length of up to one place of decimal.
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Text solutionVerified
In the given figure,
and are the tangents drawn from P, to the outer circle and inner circle respectively.
and are the radii and
and are two tangents to the circles respectively
So,
and
In right
By Pythagoras Theorem:
___(1)
From right ,
[Using equation (1)]
we have
Or
Length of is
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Question Text | In the given figure, O is the centre of two concentric circles of radii cm and respectively. and are tangents to the outer and inner circle respectively. If , find the length of up to one place of decimal. |
Answer Type | Text solution:1 |
Upvotes | 150 |