A hall of 10 m length, 5 m width and 6 m height is to be painted (one side only). Determine the total surface area to be painted. (neglect the area of windows anddoors)(floor area is NOT to be painted)
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 230 m2
Given that
Length( l ) = 10 m
Width(b ) = 5 m
Height (h) = 6 m
According to the question
Total surface area without floor area = 2 lh + 2 bh + lb
= 2 × 60 + 2 × 30 + 50 = 230 m2