Question

the area of a square is 900cm² find the perimeter of the square​

Answer 1

Answer:

the area of a square is 900cm²

and

the perimeter of the square = 4×side

area =side × side

area= 900cm

${cm}^2}$

side = 30

so, area = 30×30

=900cm²

perimeter= 4× 30

= 120cm ans

Step-by-step explanation:

l hope it helps you

Answer 2

Answer:

The Perimeter of the square​ is 120 cm .

Next two diagram contain (Option D) 13 and 16 boxes .

Step-by-step explanation:

Given -

Area of a square is 900cm²

To find -

The perimeter of the square​

Solution -

As we know that,

Area of a square = $a^{2}$

Where ,

a is a side length of a square.

Put the given value in these formula we get,

$900=a^{2}$

When square of a is get transferred from right to left it becomes square root.

$a= \sqrt{900}$

900 is a square of 30 ,

So,

$a=30$

Perimeter of the square​ = $4a$

As, a equal to 30

Perimeter of the square​ = $4 \times 30$

Perimeter of the square​ = $120 \: cm$

∴ The Perimeter of the square​ is 120 cm .

Picture Q.

Ans -

As, In each case one box each is getting add to left , right and top .

So, total 3 boxes added after each stage

stage 1 = 1 box

stage 2 = $1+3=4$ box

Stage 3 = $4+3=7$ box

Stage 4 = $7+3= 10$box

Stage 5 = $10+3=13$ box

Stage 6 = $13+3=16$ box

∴ Option D- 13 and 16