A.  $OM=2\sqrt{5}$

B.  $OM=15$

C.  $OM=10$

D.  $OM=3\sqrt{10}$

A. 3.322.000 đồng

B. 3.476.000 đồng

C. 2.159.000

D. 2.715.000 đồng

A.M(4;4)

B. $M\left(-\frac{24}{5};-\frac{2}{5}\right).$

C. $\left[\begin{array}{l}M\left(-4;4\right)\\ M\left(-\frac{24}{5};-\frac{2}{5}\right)\end{array}\right.$

D.M(-4;4)

A.  $(x+2{)}^2+(y+5{)}^2=4$

B.  $(x-1{)}^2+(y+3{)}^2=4$

C.  $(x+4{)}^2+(y-1{)}^2=4$

D.  $(x-2{)}^2+(y-5{)}^2=4$

A. $8\pi$

B. $16\pi$

C. $32\pi$

D. $64\pi$

A.  ${\left(x-3\right)}^2+{\left(y-3\right)}^2=9$

B.  ${\left(x-3\right)}^2+{\left(y+3\right)}^2=9$

C.  ${\left(x-3\right)}^2-{\left(y-3\right)}^2=9$

D.  ${\left(x+3\right)}^2+{\left(y+3\right)}^2=9$