Answer:
a = 5,
b = √128,
c = √221
Explanations:
Pythagorean theorem
Hypotenuse² = adjacent² + opposite²
a. C² = 4² + 3²
C² = 16 + 9
C² = 25
C = √25
C = 5
b. C² = 8² + 8²
C² = 64 + 64
C² = 128
C = √128
c. C² = 11² + 10²
C² = 121 + 100
C² = 221
C = √221
a = 5, b = √128, c = √221