Vineet wants to polish the floor of a room which is 140 cm long and 120 cm wide . The charges for polishing the floor is 52 per square metre . What will be the cost of polishing the floor of the room ?
I need the answer of this question urgently please answer.
Answers
Answered by
6
Answer:
Length=140cm
breadth=120cm
Area=(140*120)cm2
=16800cm2
= 1.68m2
Cost of polishing floor = 1.68*52
=Rs.87.36
Answered by
2
Step-by-step explanation:
"Given details are, Length of room = 12 m
Let width of room be ‘b’ m
Let height of room be ‘h’ metre Now,
Area of floor = 12×b m2 = 12b m2
Cost of matting the floor at the rate of 85 paise per square metre = Rs 91.80 12b × 0.85 = 91.80
12b = 91.80/0.85
12b = 108 b = 108/12
= 9m
Now, Breadth of room = 9m
Area of 4 walls = 2 (l×h + b×h)
= 2 (12×h + 9×h)
= 2 (12h + 9h)
= 2 (21h)
= 42h m2
Cost for preparing walls at the rate of Rs 1.35 per square metre = Rs 340.20 42h × 1.35 = 340.20
42h = 340.20/1.35
42h = 252 h = 252/42
= 6m
∴ Height of room is 6m. "
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