Question

6. The measure of the side of a square
handkerchief of area 1225 cm2 is​

Answer 1

Answer:

area=1225cm²

a²=1225

a=√1225=35cm

Answer 2

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If the area of a square is 225 cm2, what is perimeter ?

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60cm

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The formula for the area is A = s^2

Where,

A is the area of the square.

s is the length of the side of a square.

Substituting and solving for s gives.

$\mathtt{225c {m}^{2} = {s}^{2}}$

we can take the square root of each side of the equation giving :

$\mathtt{ \sqrt{225 {cm}^{2} } = \sqrt{ {s}^{2} } }$

15cm = s

s = 15cm

The Formula for the perimeter of a square is :

p = 4s

Where,

P is the perimeter of the square.

S is the length of the side of a square.

Substituting for s from the solution for the previous formula and calculating p gives :

P = 4 × 15cm

P = 60cm

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