The perimeter of a rectangle is 64 m and its length is 3 times its width, what is the length of the Rectangle?

Length = 24m

Step-by-step explanation:

Perimeter = 2(length + width)

then:

p = 2(e+w)   eq.1

e = 3w     eq. 2

Replacing the eq. 2 in the eq. 1

64 = 2(3w+w)

64 = 2(4w)

64 = 8w

64/8 = w

w = 8

from the eq. 2

e = 3*8

e = 24

Check:

from the eq. 1

64 = 2(24+8)

64 = 2*32

$4034.40

the perimeter of the field is the sum of the lengths of the four sides:

47 yd + 158 yd + 47 yd + 158 yd = 410 yd

the cost of 3 ft (1 yd) of fence is 3×$3.28 = $9.84.

so the cost of jake's wood perimeter fance is

(410 yd) × ($9.84 /yd) = $4034.40