Question

in the fig., ab is the common tangent to the given circles which touchesvexternally at p . If ap =3.2 cm fin the length of ab

Answer 1

Answer:

From properties of tangent we know that:

AP=PT

Also,

PT=PB

So,

AP=PB=3.2

So, total length will be 6.4

Answer 2

Answer: 6.4

Step-by-step explanation:

AP=PT=3.2cm --------------[1]

(tangents from an external point are eqoual in length)

Similarly,

BP=PT=3.2cm ---------------[2]

[1] & [2] implies,

AP=BP=3.2cm

Therefore AB= AP+BP

                      = 3.2+3.2

                      = 6.4cm