The length of a tangent from a point a at distance 5 cm from the centre of the circle is 4 cm. Find the radius of the circle
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hola:
here is your answer
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Given: lenggt of it's tangent = 4cm
distance from the centre to external point = 5cm
radius = ?
by pythogours therom
OA2 = OB2 + BA2
52 = (OB)2 + (4)2
25 - 16 = OB2
OB2 = 9
OB= square root 9
OB = 30m
Radius is 30m
==============================================
Note: 2 is the power of the number or letter
==============================================
I hope it helps you
have a good day
here is your answer
=============================================
Given: lenggt of it's tangent = 4cm
distance from the centre to external point = 5cm
radius = ?
by pythogours therom
OA2 = OB2 + BA2
52 = (OB)2 + (4)2
25 - 16 = OB2
OB2 = 9
OB= square root 9
OB = 30m
Radius is 30m
==============================================
Note: 2 is the power of the number or letter
==============================================
I hope it helps you
have a good day
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