the cost of fencing a rectangular plot at the rate of rs 55 per meter is rs 6160. if the length and breadth of the rectangular field are in the ratio 3:5, find its area.
Answers
Step-by-step explanation:
Cost of fencing a rectangular plot is 6160 rupees
cost of fencing per metre is 55 rupees
How many metres are painting..??
6160÷55 = 112 metres
They give fencing
fencing means, we take parameter of rectangle
parameter of rectangle = 2 (l+b)
2 (l+b) = 112
l+b = 112÷2 = 56 m.... (1)
l : b = 5 :3
l/b = 5/3
l= 5b/3
from (1) ....5b/3 + b = 56
8b/3 = 56
8b = 3×56
8b = 168
b = 21 m
l = 5b/3 = (5×21)/3 = 105/3 = 35m
l=35m
Area = l×b = 35×21 = 735 sq.m
Answer:
Step-by-step explanation:
Cost of fencing a rectangular plot is 6160 rupees
cost of fencing per metre is 55 rupees
How many metres are painting..??
6160÷55 = 112 metres
They give fencing
fencing means, we take parameter of rectangle
parameter of rectangle = 2 (l+b)
2 (l+b) = 112
l+b = 112÷2 = 56 m.... (1)
l : b = 5 :3
l/b = 5/3
l= 5b/3
from (1) ....5b/3 + b = 56
8b/3 = 56
8b = 3×56
8b = 168
b = 21 m
l = 5b/3 = (5×21)/3 = 105/3 = 35m
l=35m
Area = l×b = 35×21 = 735 sq.m