Tính:
a) \(\sqrt {81} \) b) \(\sqrt {8100} \)
c) \(\sqrt {64} \) d) \(\sqrt {0,64} \)
e) \({\rm{}}\sqrt {1000000} \) g) \(\sqrt {0,01} \)
h) \(\sqrt {{{49} \over {100}}} \) i) \(\sqrt {{4 \over {25}}} \)
k) \(\sqrt {{{0,09} \over {121}}} \)
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a) \(\sqrt {81} = 9\) b) \(\sqrt {8100} = 90\)
c) \(\sqrt {64} = 8\) d) \(\sqrt {0,64} = 0,8\)
e) \({\rm{}}\sqrt {1000000} = 1000\) g) \(\sqrt {0,01} = 0,1\)
h) \(\sqrt {{{49} \over {100}}} = {7 \over {10}}\) i) \(\sqrt {{4 \over {25}}} = {2 \over 5}\)
k) \(\sqrt {{{0,09} \over {121}}} = {{0,3} \over {11}} = {3 \over {110}}\)