diff --git a/docs/README.md b/docs/README.md
index 0a951eac28..57afdb7525 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -10,3 +10,15 @@
 - Square: P = 4a
 
 # Some change for Lesson 6 practice
+# Math formulas
+## Area
+- Circle: S = πR²
+- Rectangle: S = ab
+- Square: S = a²
+
+## Perimeter
+- Circle: P = 2πR
+- Rectangle: P = 2a + 2b
+- Square: P = 4a
+
+# Some change for Lesson 6 practice