The length of the edging that surrounds circular garden \(K\) is \(\dfrac12\) the length of the edging that surrounds

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The length of the edging that surrounds circular garden \(K\) is \(\dfrac12\) the length of the edging that surrounds circular garden \(G.\) What is the area of garden \(K?\) (Assume that the edging has negligible width).

(1) The area of \(G\) is \(25\pi\) square meters.
(2) The edging around \(G\) is \(10\pi\) meters long.

Source: Official Guide

Answer: D
Source: — Data Sufficiency |