Question

what is the length of the rectangle if the perimeter is 309.2 and width is 71.2

Answer 1

Let the length be x
ATP ,
2(x+71.2)=309.2
x+71.2=309.2/2
x+71.2=154.6
x=154.6-71.2=83.4
Hence , it's length is 83.4

Answer 2

Let the length be l

using the formula 2(l+b)

2(l+71.2)=309.2

l+71.2=309.2/2

l+71.2=154.6

l=154.6-71.2=83.4

Hence , it's length is 83.4