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2009-12-17T20:53:58+01:00
A)
12² + 9² = 144 + 81 = 225 = x²
x = √225 = 15
b)
3² + 6 ² = 9 + 36 = 45 = 9*5 = x²
x = √(9*5) = √9*√5 = 3 √5
c)
4² + 3² = 16 + 9 = 25 = x²
x = √25 = 5
d)
11² + 3² = 121 + 9 = 130 = x²
x = √130
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2009-12-17T20:55:52+01:00
A. 12² + 9² = x²
144 + 81 = x²
225 = x²
√225 = x
15 = x

b. 3² + 6² = x²
9 + 36 = x²
45 = x²
√45 = x
6,708 = x

c. 4² + 3² = x²
16 + 9 = x²
25 = x²
√25 = x
5 = x

d. 11² + 3² = x²
121 + 9 = x²
130 = x²
√130 = x
11,401 = x

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