diff --git a/indexformula.html b/indexformula.html
new file mode 100644
index 0000000..d66c928
--- /dev/null
+++ b/indexformula.html
@@ -0,0 +1,16 @@
+
+
+
+
+ Basic Formulas
+
+
+
+ Basic Formulas
+
+ - Open Developer Tools
+ - Select the Console Tab
+ - Begin typing JS functions to test output
+
+
+
diff --git a/js/formulas.js b/js/formulas.js
index 2435d53..39db953 100644
--- a/js/formulas.js
+++ b/js/formulas.js
@@ -1,80 +1,81 @@
// Basic math formulaas
function addition(num1, num2){
- return -1;
+ return num1 + num2;
}
function subtraction(num1, num2){
- return -1;
+ return num1 - num2;
+
}
function multiplication(num1, num2){
- return -1;
+ return num1 * num2;
}
function division(num1, num2){
- return -1;
+ return num1 / num2;
}
// Area formulaas
function areaSquare(side){
- return -1;
+ return side * side;
}
function areaRectangle(length, width){
- return -1;
+ return length * width;
}
function areaParallelogram(base, height){
- return -1;
+ return base * height;
}
function areaTriangle(base, height){
- return -1;
+ return (1/2) * base * height;
}
function Circle(radius){
- return -1;
+ return Math.PI * radius * radius;
}
function Sphere(radius){
- return -1;
+ return 4 * Math.PI * radius * radius;
}
// Surface Area formulas
function surfaceAreaCube(side){
- return -1;
+ return 6 * side * side;
}
function surfaceAreaCylinder(radius, height){
- return -1;
+ return 2 * Math.PI * radius * height + 2 * Math.PI * radius * radius;
}
// Perimeter formulas
function perimeterSquare(side){
- return -1;
+ return 4 * side;
}
function perimeterRectangle(length, height){
- return -1;
+ return 2 * length + 2 * height;
}
function perimeterTriangle(side1, side2, side3){
- return -1;
+ return side1 + side2 +side3;
}
function perimeterCircle(diameter){
- return -1;
+ return Math.PI * diameter;
}
// Volume formulas
function volumeCube(side){
- return -1;
+ return side * side * side;
}
function volumeRectangular(length, width, height){
- return -1;
+ return length * width * height;
}
function volumeCylinder(radius, height){
- return -1;
-}
+ return Math.PI * radius * radius * height;
+}
\ No newline at end of file