The order communication was Formal because:
1. Channel Characteristics: - Intercom (official workplace system) - Followed organizational hierarchy (CEO→Manager)
2. Content Nature: - Business-critical information (large order) - Revenue-impacting instruction
3. Context Indicators: - Despite personal relationship, used official channel - Task execution required formal record
Clarifications: - (B) Informal: Would involve personal channels (texts, casual talk)
- (C) Online: Too broad (intercom isn't internet-based)
- (D) Visual: No diagrams/charts used
Final Answer: (A) Formal Communication
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 \(P,O,Q\).