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A circle has an area of x. If the diameter is increased by 5
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01 Feb 2020, 09:50
01 Feb 2020, 09:50
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Question Stats:
60% (01:11) correct
40% (00:54) wrong based on 5 sessions
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A circle has an area of x. If the diameter is increased by 50%, what is the area of the resulting circle in terms of x?
A. 1.25x
B. 1.5x
C. 2x
D. 2.25x
E. 3x
A. 1.25x
B. 1.5x
C. 2x
D. 2.25x
E. 3x
Re: A circle has an area of x. If the diameter is increased by 5
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03 Feb 2020, 09:38
03 Feb 2020, 09:38
Since the area of a circle = r^2 *π
now d = 2d is increased by 50% --> 1,5r --> Area = (1,5r)^2 *π = 2,25*r^2 *π
--> therefore 2,25x is correct (D)
now d = 2d is increased by 50% --> 1,5r --> Area = (1,5r)^2 *π = 2,25*r^2 *π
--> therefore 2,25x is correct (D)
gmatclubot
Re: A circle has an area of x. If the diameter is increased by 5 [#permalink]
03 Feb 2020, 09:38
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