circle of radius 3.5 cm name its diameter, chord radius and center
Answers
Answered by
1
Answer:
OA is the radius of circle & AB is the chord
Now draw a perpendicular line from the chord to the centre of circle
Let us say the point on the chord ’D’
Now we can see two triangles ΔOAD &ΔOBD
In these two triangles we see that OA = OB & OD is common, So by the properties of triangles AD = DB = 3 cm
Now applying pythagoras theorem in triangle OAD (because it is a right angle triangle)
AO2=AD2+OD2
(3.5)2=32+OD2
OD2=12.25−9=3.25 cm
OD=1.80 cm
Similar questions