Let's do this question, ABCDE is a program in which it is perpendicular to KDDI, all right.
So this angle over here is 90 degree AC is equal to five centimeter.
B is equal to four centimeter.
And the area of triangle area is six centimeter square.
All right.
Now find the perimeter and area of Ebiquity of the video.
Give it a try and then let's do it together.
All right, we're back.
I hope you've given it a try.
Let's do it together now.
The area of E.T. is given a six centimeter square, right?
And we know that area of a triangle is half in the base in the height because this is a 90 degree angle.
If I take this as the base, the height is itself.
Right.
Therefore, the area of this triangle can be written as having to be into it, and that is given a six
centimeter square.
So it's given that B is equal to for that substitute that over here.
So that gives half into four in the area is equal to six, therefore it is equal to three centimeter.
What we have found this length over here.
Let's market over here.
OK, so now let's draw a triangle, ABC, this triangle over here, let's draw it over here.
We have that side.
It is three centimeter.
Inside side is five centimeters.
Right.
Let's find X using Pythagoras Theorem Y because this angle over here is 90 degrees.
And in the right angle triangle, we can say that hypotenuse square is equal to some of the squares
of the other two sides.
Twenty five is equal to nine plus X Square or you get X is equal to or centimeter.
We have found that X is equal to four centimeter.
Let's market over here.
Now, in this triangle in the east, you know that it's the right angle.
Triangle 80 square is equal to a square plus the square, but that's nine plus 16.
Therefore you can see that it is equal to five.
Root of twenty five is five.
OK, so let's proceed.
So we have identified these lengths.
Now we need to find the perimeter and area of ABCDE.
What would be the perimeter.
That's two times length plus breadth or two times side by side because these two sides are equal and
these two sides are equal.
So perimeter is equal to two times 80 plus D.C. and that gives you two times five plus eight, which
is equal to twenty six.
And what is the area of A, B, C, D we just need to base into height.
So if I take DC as the base that's easy into 80.
What is DC.
This is four plus four.
That gives you eat what is easy.
That's three.
So the areas is the three which is equal to twenty four centimeter square.