Thanks for the response. 2. I do not know the correct answer. But solution(s) seemingly easy yet questionable. 3. Does it involve knowledge of trigonometry and or third angle projection etc. 4. Shall appreciate your elucidation of working leading to the answer 6.66 Thanks and Regards. GOD - You & Maths are inseparable and there’s is an air of enigmatism surrounds both.
