Question

Pls solve this and explain

Answer 1

Answer:

11 , -11

Step-by-step explanation:

See in the attachment .

Answer 2

Step-by-step explanation:

$2\pi \sqrt{ \frac{l}{g} } \\ 2 \times 3 \times \frac{1}{7} \sqrt{ \frac{98}{32} } \\ 2 \times \frac{22}{7} \sqrt{ \frac{98}{32} } \\ \frac{44}{7} \sqrt{ \frac{49}{16} } \\ \frac{44}{7} \times \frac{7}{4} \\ 11$