Tính \(\int_L {\sqrt {{x^2} + {y^2}} } ds\) với \(L:{x^2} + {y^2} = 2x\)

A. \(\pi \)

B. \(2\pi \)

C. \(3\pi \)

D. \(6\pi \)

A. \(m = 1\)

B. \(m = 2\)

C. \(m = 3\)

D. \(m = 4\)

A. 20

B. 25

C. 24

D. 18

A. \(\frac{{7\pi }}{{512}}\)

B. \(\frac{{\sqrt {2\pi } }}{{512}}\)

C. \(\frac{\pi }{{512}}\)

D. \(\frac{{3\pi }}{{512}}\)

A. \(\frac{1}{3}(5\sqrt 5 - 1)\)

B. \(\frac{1}{{12}}(5\sqrt 5 - 1)\)

C. \(\frac{1}{6}(5\sqrt 5 - 1)\)

D. \(\frac{1}{2}(5\sqrt 5 - 1)\)

A. \(\frac{{5\pi }}{{128\sqrt 2 }}\)

B. \(\frac{{3\pi }}{{256\sqrt 2 }}\)

C. \(\frac{\pi }{{256\sqrt 2 }}\)

D. \(\frac{{7\pi }}{{256\sqrt 2 }}\)