What is the length of the side of a square whose area is 441 sq. cm?

1.	What is the length of the side of a square whose area is 441 sq. cm?
Answer» Step-by-step explanation: given , in a square, area = 441 cm² let the side of square be a area of square = side² = a² so, ACCORDING to question, a² = 441 [area = 441] a = √441 a = 21 so, length of each side of square = *21 cm* *EXTRA INFORMATION* *Square :--* a = side of square *Area of square = a²* *perimeter = 4a* $\large{\sqrt{2}a }$ *diagonal =* *Rectangle* *:--* l = length b = breadth *Area = l × b* *perimeter = 2(l + b)* *diagonal² = l² + b²* *Triangle :--* *RIGHT angled triangle* b = base H = height *area =1/2 × b × h*

Answer»

Step-by-step explanation:

given ,

in a square,

area = 441 cm²

let the side of square be a

area of square = side² = a²

so,

ACCORDING to question,

a² = 441 [area = 441]

a = √441

a = 21

so,

length of each side of square = 21 cm

EXTRA INFORMATION

Square :--

a = side of square

Area of square = a²

perimeter = 4a

$\large{\sqrt{2}a }$ diagonal =

Rectangle :--

l = length

b = breadth

Area = l × b

perimeter = 2(l + b)

diagonal² = l² + b²

Triangle :--

RIGHT angled triangle

b = base

H = height

area =1/2 × b × h

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