Question

D. 1. The perimeter of a square playground is 400m. Find it's area.​

Answer 1

Answer:

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The perimeter of a square playground is 400m. Find it's area.

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Perimeter of Square = 4×side

Therefore,

4a = 400m

a = 400 / 4 = 100m

Side = 100m

Area = side × side

Area = 100 × 100

= 10000m²

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Answer 2

Answer:

$\bf \huge10000 \: metre²$

Step-by-step explanation:

Given that :

• The perimeter of a square playground is 400m.

to find :

• find its area

formulas used :

• area = side × side
• perimeter = 4 × side

explanation :

Finding the side of square

⟼ perimeter = 4 × side

⟼ 400 m = 4 × side

⟼ side = 400/4 m.

⟼ side = 100 m

finding the area of square

⟼ area = side × side

⟼ area = 100 × 100m

⟼ area = 10000 m²

∴ area of square playground is 10000 metre².