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CBSE Class 8 Answered

A class room is 7m long, 6m broad and 3.5m height.  doors and windows  occupy the area of 17 sq.  m.  what is the cost of white washing the wall @2per square meter.
Asked by Nimmi | 18 Feb, 2019, 11:40: PM
answered-by-expert Expert Answer
considering space 4 space Walls space rightwards arrow space lateral space surface space area
lateral space surface space area rightwards double arrow 2 lh plus 2 bh
equals 91 space sq. straight m
minus space widows space and space doors space area equals 17 space sq. straight m
Remaining space area space equals space 74 space sq. straight m
cost space of space white space washing equals 74 space straight x space 2 equals 148 space unit space cost
Answered by Arun | 19 Feb, 2019, 10:03: AM

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