A square's diagonal has a length equal to √(2) times the length of its sides. So if the side length is <em>x</em>, then the diagonal is such that
√(2) <em>x</em> = 10 cm
→ <em>x</em> = 10/√(2) cm ≈ 7.07 cm
The perimeter of a square is 4 times its side length, so the perimeter is
4 (10/√(2) cm) = 40/√(2) cm ≈ 28.3 cm
which makes 28.4 cm the closest answer.


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13/2170 = 0.006 (to 3 decimal places)
Answer:
B. AC
Step-by-step explanation:
Answer:
A, D
Step-by-step explanation:
Put x = 6 in equations and resultant is 12.