Question

draw a circle of radius of 4 cm From a point 9 cm away from its centre draw two tangents to the circle measure the length of the tangent




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Answer 1

➠ Solution :-

➠ Given

Radius of circle = 4cm

Distance from the center to a point = 9cm

We need to find ,

Length of tangent = ?.

As we know that ,

L = √d² + r²

Where ,

L is length of tangent .

d is distance between the point and the centre.

r is radius of the circle .

Substituting the known values we have ,

➠ L = √9² + 4²

➠ L = √81 + 16

➠ L = √97

Length of tangent = 9.84 cm

Hence , length of tangent = 9.84 cm