Homework Help: Math

Posted by Simran kaur on Sunday, September 9, 2012 at 10:15am.

The length and bredth of a rectangular field are in d ratio 5:3.If the cost of reaping the field at 85paise per sq. Meter is Rs.624.75,find the cost of fencing it at the rate of Rs. 4per meter.
Plz give me full solutn nd ans is Rs.448

Math - Steve, Sunday, September 9, 2012 at 2:41pm
area is 5x*3x = 15x^2
perimeter is 2(5x+3x) = 16x

reaping costs .85*15x^2 = 12.75x^2
fencing costs 4*16x = 64x

12.75x^2 = 624.75
x = 7

64 * 7 = 448
Math - Simran kaur, Monday, September 10, 2012 at 12:34pm
Thank u :)

Answer this Question

Related Questions

math - The ratio of the length of a rectangular field to its width is 10:7. If ...
math - The ratio of the length of a rectangular field to its width is 10:7. If ...
Pre Algebra - The ratio of the length of a rectangular field to its width is 10:...
math - The perimeter of a rectangular field is 560m.The length of the field is ...
Geometry - A farmer uses 140 ft. of fencing to enclose a rectangular field. if ...
Math - A square field of side 25m and a rectangular field of length 28m have the...
Algebra2 - The area of a rectangular field is x^2-x-72 m^2. The length of the ...
MATH - A rectangular field is to be enclosed with 1200 ft of fencing. If the ...
Math 156 - A rectangular field is to be enclosed with 1200 ft. of fencing. If ...
geometry - A rectangular field is 64 m X 25 m. Shawn wants to fence a square ...

For Further Reading

First Name:
School Subject:
Answer: