Question

find the area of a square whose perimeter is 84 CM ​

Answer 1

Here's your answer,

Perimeter =84cm

side = 84/4 = 21cm

now ,

Area of a square = (side)²

=441 cm²

caution , units are important .

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Answer 2

Answer:

area=441cm^2

Step-by-step explanation:

The perimeter of square =84

The side of a square = 84/4

=21 cm^2

The area of square is a^2= 21×21

=441cm^2