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GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
Given Kudos: 1055
GPA: 3.39
The volume of a sphere with radius r is 4/3*r^3 and the surface area
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28 Jan 2023, 10:23
28 Jan 2023, 10:23
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Question Stats:
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The volume of a sphere with radius r is \(\frac{4}{3}πr^3\) and the surface area is \(4πr^2\). If a spherical balloon has a volume of 972π cubic centimeters, what is the surface area of the balloon in square centimeters?
(A) 324
(B) 729
(C) 243π
(D) 324π
(E) 729π
(A) 324
(B) 729
(C) 243π
(D) 324π
(E) 729π
Re: The volume of a sphere with radius r is 4/3*r^3 and the surface area
[#permalink]
30 Jan 2023, 03:28
30 Jan 2023, 03:28
Expert Reply
4/3πr^3=972π
r=9
The surface area is 4πr^2
4×π×9^2=324π
r=9
The surface area is 4πr^2
4×π×9^2=324π
gmatclubot
Re: The volume of a sphere with radius r is 4/3*r^3 and the surface area [#permalink]
30 Jan 2023, 03:28
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