| Underweight | Wasting |
|---|---|
| Refers to a condition where a child’s weight is low for their age. It indicates chronic malnutrition. | Refers to a condition where a child’s weight is too low for their height or body size. It indicates acute malnutrition. |
| It reflects both past and present nutritional status. | It reflects recent and severe weight loss or failure to gain weight. |
| It is measured by comparing weight-for-age using growth charts. | It is measured by comparing weight-for-height using growth charts. |
A racing track is built around an elliptical ground whose equation is given by \[ 9x^2 + 16y^2 = 144 \] The width of the track is \(3\) m as shown. Based on the given information answer the following: 
(i) Express \(y\) as a function of \(x\) from the given equation of ellipse.
(ii) Integrate the function obtained in (i) with respect to \(x\).
(iii)(a) Find the area of the region enclosed within the elliptical ground excluding the track using integration.
OR
(iii)(b) Write the coordinates of the points \(P\) and \(Q\) where the outer edge of the track cuts \(x\)-axis and \(y\)-axis in first quadrant and find the area of triangle formed by points \(P,O,Q\).