Answer:
Explanation:
Area of a circular hubcap is 615 square inches
Area of a circular shaped object is given by :
[tex]A=\pi r^2[/tex]
r is radius of hubcap.
If the radius of the hubcap were quadrupled, it means r' = 4r. New area will become:
[tex]\dfrac{A}{A'}=\dfrac{r^2}{r'^2}[/tex]
A' is new area
[tex]A'=A\times \dfrac{r'^2}{r^2}\\\\A'=615\times \dfrac{(4r)^2}{r^2}\\\\A'=615\times 16\\\\A'=9840\ \text{inches}^2[/tex]
New area of the hubcap is 9840 square inches.
