2 years ago

(please zoom / zoom out if needed to see question. (: )

1 answer:

5 0

Arc length = 2 π R (C/360)
where:
C is the central angle of the arc
R is the radius of the arc

arc length = 2 π R (137/360) = 2.39R

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Liono4ka [1.6K]

Compute the sum to simplify C :

$C = \begin{bmatrix}16-0.5 & 9+0 \\ -3+5 & 0 + 8 \\ 4-3 & -10+14\end{bmatrix} = \begin{bmatrix}15.5 & 9 \\ 2 & 8 \\ 1 & 4\end{bmatrix}$

Now, $c_{ij}$ is the entry of the matrix in row i and column j, so

$C = \begin{bmatrix}15.5 & \boxed{9} \\ 2 & 8 \\ 1 & 4\end{bmatrix} \implies c_{12} = 9$

$C = \begin{bmatrix}15.5 & 9 \\ 2 & 8 \\ \boxed{1} & 4\end{bmatrix} \implies c_{31} = 1$

$C = \begin{bmatrix}15.5 & 9 \\ 2 & \boxed{8} \\ 1 & 4\end{bmatrix} \implies c_{22} = 8$

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