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shepuryov [24]
3 years ago
14

Question 6

Chemistry
1 answer:
Hoochie [10]3 years ago
6 0

Answer:

Explanation:

Area of a circular hubcap is 615 square inches

Area of a circular shaped object is given by :

A=\pi r^2

r is radius of hubcap.

If the radius of the hubcap were quadrupled, it means r' = 4r. New area will become:

\dfrac{A}{A'}=\dfrac{r^2}{r'^2}

A' is new area

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

New area of the hubcap is 9840 square inches.

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