//To calculate the Area of the Pool
func Area(PoolLength:Double,PoolWidth:Double)-> Double
{
    let area = PoolLength * PoolWidth
    return area
}

//To calculate the Volume of the Pool
func poolVolume(PoolLength:Double, PoolWidth:Double, ShallowDepth:Double,DeepDepth:Double)->Double{

    let area = PoolLength * PoolWidth
    let avgDepth = ((ShallowDepth + DeepDepth) / 2)
    let volume = area * avgDepth


    return volume
}

return (Area(),poolVolume())