 Hello friends, let's discuss the following question. It says a rhombus shaped field has green grass for 18 cows to graze. If each side of the rhombus is 30 meter and its longer diagonal is 48 meter, how much area of grass field which will each cow be getting? So we have given a rhombus shaped grass field having each side 30 meter. Let's name this as ABCD. Now we have to find the area which each cow will be getting to graze. For that we first need to find the total area of the field and then to find the area for each cow to graze will divide the total area by the number of cows. So keeping this approach in mind, let us now move on to the solution. Now we will find the area of triangle ABD and then we will add the area of triangle BCD to the area of triangle ABD. But area of triangle ABD will be same as area of triangle BCD because the dimensions are same. So in triangle ABD is 30 meter, AD is also 30 meter and BD is 48 meter. Now we will find the area of the triangle by Heron's formula. For that we first need to find S which is A plus B plus C by 2. Here A is 30, B is 30 and C is 48. So S is 30 plus 30 plus 48 upon 2 which is equal to 54. Now we find area of triangle ABD which is equal to S into S minus A into S minus B into S minus C. Now here S is 54, A is 30, so 54 minus 30 into 54 minus 30 into 54 minus 48 and it is equal to on the root of 54 into 24 into 24 into 6 which is equal to 24 into root of 54 into 6. 54 can be written as 3 into 3 into 6 and here we have 6. So this is equal to 24 into 3 into 6 which is equal to 432. And since it's the area and the unit of length is meter, so unit of area will be meter square, so we have meter square here. So the area of triangle ABD is 432 meter square and area of triangle BCD is same as area of triangle ABD, area of triangle ABD is same as area of triangle BCD. So the area of rhombus shape, area of triangle ABD plus area of triangle BCD that is 432 meter square plus 432 meter square which is equal to 864 meter square. Now the number of cows is given to be 18. Now the area which each cow will be getting equal to the area of the field upon the number of cows, so this is equal to 864 meter square upon 18. So the area which each cow will be getting is 48 meter square, hence our answer is 48 meter square. So this completes the question. Bye for now. Take care. Have a good day.