Question

PQ is the common tangent to both the circles SR and PT are tangents SR=4cm,PT=7cm,find RP

Answer 1

now it's very easy so easy tangent drawn from external point are equal

Answer 2

RP = 3 cm PQ is the common tangent to both the circles SR and PT are tangents SR=4cm,PT=7cm

Step-by-step explanation:

Tangent to a circle from same points are equal in length

Hence RQ = RS

SR = 4 cm given

=> RQ = 4 cm

and

PQ = PT

PT = 7 cm given

=> PQ = 7 cm  

PQ = RP + RQ

=> 7 = RP + 4

=> RP = 3

RP = 3 cm

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