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If the radius of a circle is increased by 40%, how much will the area
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28 May 2022, 01:00
28 May 2022, 01:00
Expert Reply
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Question Stats:
70% (00:56) correct
30% (00:36) wrong based on 10 sessions
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If the radius of a circle is increased by 40%, how much will the area increase?
16%
20%
40%
80%
96%
16%
20%
40%
80%
96%
Part of the project: GRE QCQ & PS 3 Questions Every One DAILY Challenge - (2022)
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GRE Math Essentials for a TOP Quant Score - Q170!!! (2021)
GRE Geometry Formulas for a Q170
GRE - Math Book
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
GRE Math Essentials for a TOP Quant Score - Q170!!! (2021)
GRE Geometry Formulas for a Q170
GRE - Math Book
Re: If the radius of a circle is increased by 40%, how much will the area
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28 May 2022, 07:53
28 May 2022, 07:53
1
Area is proportional to radius square so increasing the radius by 40% would result in 96% increase in area as (1.4*1.4=1.96). Option E is the answer
Re: If the radius of a circle is increased by 40%, how much will the area
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28 May 2022, 08:21
28 May 2022, 08:21
1
Let r = radius and A = area
A=Pi*r^2 ----------(originally)
A=Pi*(1.4r)^2 ----(after 40% increase)
A=1.96*Pi*r --- A increased by 96%
Answer is (E)
A=Pi*r^2 ----------(originally)
A=Pi*(1.4r)^2 ----(after 40% increase)
A=1.96*Pi*r --- A increased by 96%
Answer is (E)
