Question

the perimeter of a square is 42cm find its area​

Answer 1

Answer :

• Area of square is 110.25 cm²

Given :

• The perimeter of square is 42cm

To find :

• Area of square

Solution :

As we know that,

• Perimeter of square = 4 × s

• Let the side of square be x

Given that perimeter of square is 42cm

》4x = 42

》x = 4/42

》x = 10.5cm

Hence , Side is 10.5cm

Now we have to find the area

As we know that,

• Area of square = (side)² = side × side

》10.5 × 10.5

》110.25 cm²

Hence , Area of square is 110.25 cm²

More Explanation :

• Perimeter of rectangle = 2(l + b)
• Area of rectangle = length × breadth
• Perimeter of square = 4 × s
• Area of square = side × side

Answer 2

Solution :

Here, perimeter of a square is given as 42 cm. We've to find it's area.

As we know that, formula for finding perimeter of a square is 4 × side

Substituting the values :

➝ 4 × side = 42

➝ side = 42/4

➝ side = 10.5 cm

Now, we'll find the area of the square.

As we know that, formula for finding area of the square is side²

Substituting the values :

➝ area of the square = 10.5 × 10.5

➝ area of the square = 110.25 cm²

Hence, the area of the square is 110.25 cm².

E X P L O R E M O R E :

• Area of the square = side²
• Perimeter of a square = 4 × side
• Area of a rectangle = length × breadth
• Perimeter of a rectangle = 2 (length + breadth)
• Area of a triangle = ½ × base × height
• Perimeter of a triangle = sum of all sides