Question

Area of a square is 441 square.cm then find its perimeter

Answer 1

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Let the side of square be 'a'

Given that ,

Area of square = 441 cm²

a² = 441

a = √441

a = 21 cm

Now,

Perimeter of square = 4a

= 4×21

= 84 cm

Answer 2

Given:

Square,

Area = 441 sq.cm

To find:

Perimeter

Solution:

Perimeter = 4 * Side

Area = Side^2

Substituting,

441 = side^2

Side = 21 cm

Hence,

Perimeter = 4 * 21

Perimeter = 84 cm

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