The perimeter of a square is 12 cm- What will be its area-A- 16 cm 2B- 9 cm 2C- 20 cm 2D- 4 cm 2

The correct option is B Perimeter of a square = 4 × Side Given: Perimeter = 12 cm ⇒ 12 cm = 4 × Side ⇒ Side = 12/ 4 = 3 cm The area of a square = side × side ...

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The perimeter of a square is 12cm. What will be its area?

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Solution

The correct option is B
Perimeter of a square = 4 $\times$ Side

Given: Perimeter = 12 cm

$\Rightarrow$ 12 cm = 4 $\times$ Side

$\Rightarrow$ Side = $\frac{12}{4}$ = 3 cm

The area of a square = side $\times$ side

=3 cm $\times$ 3 cm

= 9 $c m^{2}$

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The perimeter of a square is 12cm. What will be its area?

The correct option is B Perimeter of a square = 4 × Side Given: Perimeter = 12 cm ⇒ 12 cm = 4 × Side ⇒ Side = 124 = 3 cm The area of a square = side × side =3 cm × 3 cm = 9 cm2

The correct option is B
Perimeter of a square = 4 $\times$ Side

Given: Perimeter = 12 cm

$\Rightarrow$ 12 cm = 4 $\times$ Side

$\Rightarrow$ Side = $\frac{12}{4}$ = 3 cm

The area of a square = side $\times$ side

=3 cm $\times$ 3 cm

= 9 $c m^{2}$