Question 6 5. The area of a circular hubcap is 615 inches. If the radius of the hubcap were quadrupled what would be the approximate area of the new hubcap rounded to the neares…

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asked Oct 6, 2021 179k views

1 Answer

Gingerhendrix · Answer 1 · 2021-10-10T16:30:43+0000

Answer:

Step-by-step 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:

(A)/(A')=(r^2)/(r'^2)

A' is new area

$A'=A* (r'^2)/(r^2)\\\\A'=615* ((4r)^2)/(r^2)\\\\A'=615* 16\\\\A'=9840\ \text{inches}^2$

New area of the hubcap is 9840 square inches.