Question

find the perimeter of rectangular field whose length is 4 times its width and which has an area equal to 30976 CM square

Answer 1

perimeter of the problem is 880

Answer 2

let the breadth be x
then the length be 4x
area of a rectangular field =(l×b)
30976=4x × x
30976=4xsquare
30976 ÷4 =x square
7769= x square
88=×
breadth of this rectangular field is 88 cm
length of this rectangular field is 88×4= 352cm
perimeter of rectangle =2(l+b)
" " " =2(352+88)cm
=2(440)cm
880cm