Find the area of a square whose perimeter is 84cm
Answers
Step-by-step explanation:
A=1
16P2=1
16·842=441cm²
Given:-
- Perimeter of a Square is 84 cm.
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To find:-
- Area of a square.
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Solution:-
We know that,
→ perimeter = 4 × side
→ 84 cm = 4 × side
→ side = 84/4
→ side = 21 cm
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Then,
→ Area of Square = side × side
→ 21 × 21
→ 441 cm²
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Hence,
- the area of a square is 441 cm².
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More Formulas:-
→ Area of rectangle = length × breadth sq.units
→ Perimeter of square = 4 × side units
→ Area of square = side × side sq.units
→ Perimeter of circle = 2πr units
→ Area of circle = πr² sq.units
→ Perimeter of parallelogram = 2 × (a + b) units
→ Area of parallelogram = base × height sq.units
→ Perimeter of rhombus = 4 × side units
→ Area of rhombus = 1/2 × diagonal (1) × diagonal (2) sq.units
→ Perimeter of equilateral triangle = 3 × side units
→ Area of equilateral triangle = √3/4 × a² = 1/2 × side × height sq.units
→ Perimeter of trapezoid = (Sum of all sides) units
→ Area of trapezoid = 1/2 × height × (sum of parallel sides) sq.units