Let's do this question, a semicircle is drawn with Abbasids diameter from see a point on a B, a line
perpendicular to abs drawn meeting the circumference of the circle at D, given that a two centimeter
CBDs equal to six centimeter, the area of the semicircle in square centimeter will be all right.
Pause the video, give it a try and then let's do it together.
All right.
We back.
I hope you have given it a try.
Let's do it together.
Now you have a circle over here and AB is the diameter.
See the point on eBay and we draw KDDI such that this angle over here is 90 degrees.
Now it's given that it's easy to centimeter and see what is equal to six centimeter.
All right.
Now we need to find the area of this semicircle over here right now.
Let's extend sorry so that it meets the circle over here.
All right, now these two sides are equal, right, because this is the diameter.
Now, therefore, this is six and this is also equal to six.
Let me call this point US leadership.
All right.
And let this be of length right now.
These two are now intersecting sequence.
Right?
Therefore, we know that C D into C dash will be equal to see in two c.b right in the city.
That is equal to the as per intersecting sequence what we learned in that section.
Now, therefore, I can say that six to six.
This is also six six.
Six is equal to two in the white.
Now, let me solve for why I get why is equal to 18 centimeters.
Now, what is the diameter?
The diameter B is two plus white.
That's two plus 18, which gives you 20 centimeter ends.
The radius extends centimeter.
And we know that the area of a circle is by our square and we are asked to find the area of the same
circle.
So the area of the semicircle is Byaah Square, divided by two.
That's equal to buy into Penn Square by two.
Right.
So that's equal to a hundred by two, which is fifty fifty in two point.
So the answer is option B. That's 50 by centimeter square.