Question

plz solve this with solution 4 question plz

Answer 1

Hey there!!!
let the length of the lace be x
A/q
Perimeter of one square = 4a = 4 ×1 = 4 m
No of square 4 , perimeter of
4 square = 4× 4
= 16m


hence 16 m of lace will be required

Answer 2

   It is not clear how the four napkins are arranged.  Are the four napkins separate or they are stuck/stitched together to make a bigger napkin ?

case 1:   if all four napkins are separate.
    Perimeter of each napkin = 1 m * 4 = 4 m
    So total perimeter of all four napkins = 4 * 4m =  16 m
    In this case 16 m long lace will be needed to trim all napkins.

case 2:   if all four napkins are joined in the center to the others, as shown in the diagram.

    Two sides of each napkin are stitched to the other napkins.  So we form a very big single napkin by joining all four napkins.  The side of the big napkin will be then 1 m + 1m = 2m.
 
   Then the perimeter = 4 * (1 m + 1m) = 8m
   The length of lace required to trim the BIG NAPKIN = 8 m.