The length and breadth of a rectangular piece of land are in the ratio 5:3. If the total cost of fencing at rs 7 per meter is rs 2800,find the area of the plot
kunika2:
ratio of length and breadth is 5:3 let the length be5x and breadth be 3x total cost of fencing is rs 2800 and rs 7 pr m ok so the perimeter is 2800/7=400m ok perimeter of rec.=2(l+b)= 400=2(l+b)=400=2(5x+3x)= 400=2(8x)= 400=16x
ok then x=400/16=x=25 length is 5x=5×25=125 and breadth is 3x=3×25=75 now the area of rec.=l×b=125×75 =9375m^2
Answers
Answered by
13
Heya user
Here is your answer !!
Ratio of length to breadth = 5:3
So let the length be 5x and breadth be 3x respectively .
Cost of fencing = Rs 7 per m
Total cost inferred = Rs 2800 .
Therefore , perimeter = 400 m
Now ,
2(l+b) = perimeter
=> 2(5x + 3x) = 400
=> 8x = 200
=> x = 25 .
So, length = 5*25 cm = 125 cm .
Breadth = 3*25 cm=75 cm .
Hence , area of the plot is = 125* 75 cm² = 9375 cm²
Hope it helps !!
Here is your answer !!
Ratio of length to breadth = 5:3
So let the length be 5x and breadth be 3x respectively .
Cost of fencing = Rs 7 per m
Total cost inferred = Rs 2800 .
Therefore , perimeter = 400 m
Now ,
2(l+b) = perimeter
=> 2(5x + 3x) = 400
=> 8x = 200
=> x = 25 .
So, length = 5*25 cm = 125 cm .
Breadth = 3*25 cm=75 cm .
Hence , area of the plot is = 125* 75 cm² = 9375 cm²
Hope it helps !!
plz follow if u lyk my amswer
ur ans is half
completed
ya now its completed
Answered by
2
Answer:-
5 : 3 is length and breadth of Rectangle
₹ 7 per/m Rate of Fencing
Rs. 2800 is the Cost of Fencing
2800÷7
400 is the perimeter
5x is the length
3x is the breadth
=2(5x+3x)=400=2(5x+3x)=400
=10x+6x=400=10x+6x=400
=16x=400=16x=400
=x= 16400=x=16400
=x=25=x=25
(Eq) 1
=5×25=5×25
=125=125
(Eq) 2
=3×25=3×25
=75=75
125 unit is the length
75 unit is the breadth
(Area=L×B)
=125×75=125×75
=9375=9375
Therefore, 9375 is the area of plot
Similar questions