Write an Equation for the Hyperbola $3 y ^ { 2 } - x ^ { 2 } = 28$

Multiple Choice

Write an equation for the hyperbola.
-The roof of a building is in the shape of the hyperbola $3 y ^ { 2 } - x ^ { 2 } = 28$ , where $x$ and $y$ are in meters. Refer to the figure and determine the height, $h$ , of the outside walls.


$$A = 9 \mathrm {~m}$$

A) $36.3 \mathrm {~m}$
B) $10.4 \mathrm {~m}$
C) $6 \mathrm {~m}$
D) $109 \mathrm {~m}$