find the side and perimeter of a square whose diagonal is 10 cm
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Step-by-step explanation:
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Answer:
Perimeter of square = 20 √2cm
Step-by-step explanation:
In a square of side say a cm, any diagonal divide the square into two right triangles of equal dimensions.
Thus a² + a² = 102
⇒ 2a² = 100
⇒ a² = 50
a = 5 cm√2
perimeter = 4a
= 4×5√2
= 20√2
Perimeter of square = 20√2cm
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