Respuesta :

toporc
The area of the whole circle is four times the area of the given sector:
[tex]Area\ of\ circle=36\pi\times 4=\pi r^{2}[/tex]
[tex]r^{2}=\frac{36\pi\times 4}{\pi}=144[/tex]
[tex]r= \sqrt{144} =12\ ft[/tex]
meerkat18
The area of the sector is the product of the area of the whole circle and the ratio of the angle over that of the whole circle, it is mathematically expressed as,
                               πr² x (90/360) = 36π ft²
Solving for r in the equation gives an answer of 12 ft. Therefore, the answer is letter D. 12 ft. 

Otras preguntas