please solve this ques
Attachments:

sowmiya35:
help me plz
Answers
Answered by
5
Required area= Area of circle-ar(ABC)-ar(OBD)-area of sector COD.
As CB is the diameter, therefore angle CAB=90°(as angle in semicircle is a right angle).
Therefore in triangle ABC,


Therefore radius of the circle=25/2cm.
Area of triangle ABC=

Area of triangle OBD=

(Here angle is in degrees)
Area of sector OCD=

Area of circle=

Required area=

which is approximately equal to
As CB is the diameter, therefore angle CAB=90°(as angle in semicircle is a right angle).
Therefore in triangle ABC,
Therefore radius of the circle=25/2cm.
Area of triangle ABC=
Area of triangle OBD=
(Here angle is in degrees)
Area of sector OCD=
Area of circle=
Required area=
which is approximately equal to
Similar questions