CBSE Class 8 Answered
The paint in a container is sufficient to paint 7.2m square. How many container of paint will be required to paint walls of a room with dimensions 3.2m*2.8m*2.4m. Find the cost of paint if each container costs rs460
Asked by durga7671 | 19 Jan, 2019, 07:48: PM
Expert Answer
It is assumed only inner sides of walls are to be painted. Also Ceiling and floor area are excluded.
assumed dimensions are length = 3.2m , breadth =2.8 m, height = 2.4 m
Hence area to be painted = 2×[ 3.2×2.4 + 2.8×2.4] sq.m = 2×2.4×6 = 28.8 m2
area can be painted using one container = 7.2 m2
no. of container = 28.8/7.2 = 4
cost of painting = 4×460 = Rs. 1840
Answered by Thiyagarajan K | 19 Jan, 2019, 10:22: PM
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