00:01
So let us try to solve each question one by one.
00:07
Just a minute.
00:11
The first question is, aunt susan placed a study table with a triangular top in her library.
00:18
The top of the table has the following dimensions.
00:21
It is given that it has bade 60 centimeters and high 20 centimeters that are asked good to find the area.
00:27
Okay, it is given that the table is in triangular shape.
00:32
So if you draw the triangle, it will be like this.
00:35
Okay, so this is the table.
00:38
This is the base b of the table and this is the height h of the triangle h.
00:47
But in the equation it is given that base b equal to 60 centimeters and height h equal to 20 centimeters.
01:03
We are asked to find the area.
01:05
So area of a triangle with base b and height h is half into base h.
01:10
Into height.
01:11
This is the formula.
01:13
So if we substitute the values of base and height, it will be 60 into 20.
01:18
So it will be 600 centimetre square.
01:21
So this is the answer for first question.
01:25
Now let us see the second question.
01:26
I am arising.
01:27
Please note it down.
01:29
Now let us see the solution for the second question.
01:32
The second question is a decorative pillow is in the shape of a trepezoid.
01:38
It is given that the dimensions of it lower and upper basis and height is also given we are asked to find the area okay so since the decorative pillow is in the shape of trepezoid let us draw the trepezoid so this is the trepezoid so in this trepezoid the upper base is ub upper and lower base so here it upper base is large and lower base is small okay so so let us draw like that.
02:12
So this is the upper base, larger one, and this is the lower base.
02:18
So it is ub, upper base, sorry, b u upper base, bl lower base, okay? and this is nothing but the height h, this is nothing but height h of the trepezoid.
02:33
In the question it is given that upper base, bl, value is 28 centimeters, lower base, sorry, b u lower base b l equal to 20 centimeters and height h equal to 10 centimeters we're asked to find the area so area a equal to h by 2 into b u plus bl this is the formula so it will become 10 by 2 into 28 plus 20 if you substitute the values so if you do this calculation we get the final answer as 10 by 2 into 20 28 plus 20.
03:16
So it becomes 240 cm square.
03:23
This is the area of the trepezoid.
03:26
Now let us see the third question.
03:27
I am arranging the second one.
03:29
Please note it down.
03:29
Now let us see the third question...
