023 The internal measures of a cuboidal room are 10 m X 8 m X 4m. Find the total cost of whitewashing four walls of a room, if
the cost of white washing is Rs 5 per m.
Marks (3)
Answers
Answered by
1
Answer:
144sq.m
Step-by-step explanation:
Area of four walls of a room = 2h(l+b)
2(4)(10+8)
8*18=144
Answered by
3
Step-by-step explanation:
area of four walls =2(l+b)h
=2(10+8)4
=2(40+24)
=2×64
=128msq.
1m cost of white washing Rs 5
128 m cost of white washing Rs=5×128
=640
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