Question

If the area of square is 400m. Find its perimeter​

Answer 1

Given :

Area Of Square - 400 m

To Find :

Perimeter Of Square

Formula TO Find :

Area Of Square - a²

Perimeter Of Square - 4a

Where,

a = Side

Solution :

Let's Find side of square ;

⟶ a² = 400

⟶ a = √400

⟶ a = 20

⟶ Side = 20 cm

∴ Side of Square = 20 cm

Let's find Perimeter ;

⟶ Perimeter = 4a

⟶ 4 × 20

⟶ P = 80

⟶ Perimeter = 80

∴ Perimeter of Square = 80 cm

KNOW MORE :

Formulaes To Find Area :

Circle = πr²

r = radius of the circle

Triangle ½ × b × h

b = base, h = height

Square = a²

a = length of side

Rectangle = l × b

l = length, b = breadth

Parallelogram = b × h

b = base, h = height

Trapezium = 1 / 2 × (a+b) × h

a and b = parallel sides, h = height

Rhombus = 1 /2 × d1 × d2

d1 and d2 are diagonals

Answer 2

Answer:

$\bold\red{\fbox{\sf{Given}}}$

• Area of Square = 400m²

$\bold\red{\fbox{\sf{To\: Find :-}}}$

• Perimeter

$\bold\red{\fbox{\sf{Formula\:used}}}$

• Area of Square = side²
• Perimeter of Square = 4×side

$\bold\red{\fbox{\sf{Solution}}}$

Area of Square = 400cm²

side² = 400

side = √400

side = 20 cm

Perimeter of Square = 4 × side

Perimeter of Square = 4 × 20

Perimeter of Square = 80 cm

Hence, the perimeter of Square is 80 cm.