From ba4f417559e58d44f9eaa09079c8228d0bf6d01e Mon Sep 17 00:00:00 2001
From: Ben Cragg <bcvery1@gmail.com>
Date: Wed, 30 Jan 2019 08:38:51 +0000
Subject: [PATCH] corrected area formula

---
 geometry.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/geometry.go b/geometry.go
index 17c574b..7353f1a 100644
--- a/geometry.go
+++ b/geometry.go
@@ -360,7 +360,7 @@ func (c Circle) Norm() Circle {
 
 // Area returns the area of the Circle.
 func (c Circle) Area() float64 {
-	return math.Pi * c.Radius * 2
+	return math.Pi * math.Pow(c.Radius, 2)
 }
 
 // Moved returns the Circle moved by the given vector delta.