Question

if a ribbon of length 20 m. is stitched around a square table cloth making 2 rounds along its boundary, then find the side of the table cloth.



answer this ☝​

Answer 1

Answer:

2.5cm

Step-by-step explanation:

Let the side be s

1 round = perimeter of square

2 rounds = ( perimeter of square ) × 2

Therefore,

Perimeter of square  = 4 × s

⇒ 20 = 2 × ( 4 × s )

⇒ $\frac{20}{2}$ = ( 4 × s )

⇒ 10 = 4 × s

⇒ s = $\frac{10}{4}$ = 2.5cm

Answer 2

Answer:

Length of the side of table cloth is 2.5 m.

Step-by-step explanation:

Given:

Length of ribbon stitched around the square table cloth making 2 rounds= 20 m.

Length of ribbon stitched around the square table cloth making 1 round=      20 /2 =10 m.

As the ribbon is stitched around the boundary of the table cloth.

So, Length of the ribbon stitched around the table cloth making 1 round = Perimeter of the square = 10 m.

As we know that,

perimeter of square = 4 × length of side

∴ Length of side =Perimeter of square / 4

                           = 10 / 4

                           = 2.5 m.

Length of side of table cloth = length of side of square = 2.5 m.