Answer:
1. x²=a² + b²
x²=10²+7²
x²=100+49
x²=149
x=√149
12.206555615
x=12.2
2.x²= a²+b²
x²=19²+ 21²
x²=361+441
x²=802
x=√802
x=28.319604517
x=28.3
3.x²=a²+b²
x²=27²+16²
x²=729+256
x²=985
x=√985
x=31.384709652
x=31.3
4.x²=a²+b²
x²= 163.84+ 28.109
x²=191.93
x=√191.93
x=13.853880322
x=13.9
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