1.

Draw a pair of tangents to a circle of radius 4 cm from a point which is 9 cm away from the centre of the circle. Measure the length of the tangents

Answer»

ong>Answer:

(radius)^2 +(length of tangent)^2=( length of common line)^2

4^2+ t^2=9^2

t^2=81-16

t^2=65

t=65^1/2

Step-by-step explanation:

draw a circle of radui 4 cm

then put the one end of scale at CENTRE of circle and draw a line SEGMENT of 9cm

from that extreme point cut the arc on the circle

then join the arc with the extreme point

now CALCULATE the length of tangent u have drawn

it will equal to SQUARE root of 65


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