Question

the perimeter of a square is equal to the perimeter of a rectangle of length 30cm. the area of the rectangle is 360cm. what is the side of the square?​

Answer 1

Answer:

21cm

Step-by-step explanation:

given: length of rectangle is 30cm

area of rectangle is 360cm

breath of rectangle =360/30

=12cm

perimeter of rectangle =2(30+12)

=84

side of the square= 84/4

=21cm

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Answer 2

Answer:

Step-by-step explanation:

perimeter of square = perimeter of rectangle

area of rectangle = lb

360=30b

b=12cm

therefore perimeter of the rect.=2(l+b)

=2(30+12)

=2*42

=84cm

thus perimeter of square = 84cm

4a=84

therefore side of the square = 21cm