The formula for the volume of a sphere is V=4/3πr³, where V is the volume and r is the radius. Solve the formula for r, and then
use it to answer the question.
The volume of a soccer ball is about 371 cubic inches.
What is the radius of the soccer ball, to the nearest tenth of an inch? Use 3.14 for π. Help.
2 answers:
Answer:
<h2>B. 4.5 in</h2>
Step-by-step explanation:
volume of sphere V = 4/3 π r³
where V = 371 in³
π = 3.14
find: radius r
solution:
371 =<u> 4 (3.14)</u> r³
3
simplify:
371 (3) = 4(3.14) r³
<u>371 (3) </u>= r³
4(3.14)
r³ = <u> 1113 </u>
12.56
r = ![\sqrt[3]{88.61}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B88.61%7D)
r = 4.5 in. therefore, the answer is B.
Answer:
4.5 inches to the nearest tenth
Step-by-step explanation:
V=4/3πr^3
Divide both sides by 4/3π:
r^3 = V / 4/3π
r = ∛ (V / 4/3 π)
When V = 371 inches:
r = ∛ (371/ 4/3 π)
= 4.46 in
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