A. \(\dfrac{6}{7}\)

B. \(\dfrac{6}{{21}}\)

C. \(\dfrac{8}{{21}}\)

D. \(\dfrac{{21}}{8}\)

$A.\;\dfrac{{4}}{{63}}$

$B.\;\dfrac{{20}}{{63}}$

$C.\;\dfrac{{45}}{{28}}$

$D.\;\dfrac{{28}}{{45}}$

A. \(\dfrac{5}{9}\)

B. \(\dfrac{7}{{20}}\)

C. \(\dfrac{{29}}{{30}}\)

D. \(\dfrac{{36}}{{35}}\)

A. \(\dfrac{{15}}{{28}}\)

B. \(\dfrac{{28}}{{15}}\)

C. \(\dfrac{{35}}{{108}}\)

D. \(\dfrac{{108}}{{35}}\)

$A.\,\,\,\dfrac{{64}}{{135}}\,\, {{m^2}} $

$B.\,\,\,\dfrac{{125}}{{64}}\,\, {{m^2}} $

$C.\,\,\,\dfrac{{135}}{{64}}\,\, {{m^2}} $

$D.\,\,\,\dfrac{{25}}{{64}}\,\, {{m^2}} $

$A.\,\dfrac{3}{5}$

$B.\,\dfrac{3}{2}$

$C.\,\dfrac{5}{3}$

$D.\,\dfrac{3}{4}$