diff --git a/README.md b/README.md
index ec852c4..575603a 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ npm install math-problems
 import { area, toCelsius, isEven, populationDensity, population } from 'math-problems';
 
 // Calculate the area of a circle with radius 5
-console.log(area.circle(5)); // { area: 78 }
+console.log(area.circle(5)); // 78
 
 // Convert 100°F to Celsius
 console.log(toCelsius(100)); // 37
@@ -36,23 +36,23 @@ All area functions return an object with a floored `area` value.
 
 - **Rectangle**  
   `rect(base: number, height: number)`  
-  `area.rect(4, 5) ➔ { area: 20 }`
+  `area.rect(4, 5) ➔ 20`
 
 - **Triangle**  
   `triangle(base: number, height: number)`  
-  `area.triangle(4, 5) ➔ { area: 10 }`
+  `area.triangle(4, 5) ➔ 10`
 
 - **Rhombus**  
   `rhombus(D: number, d: number)`  
-  `area.rhombus(8, 6) ➔ { area: 24 }`
+  `area.rhombus(8, 6) ➔ 24`
 
 - **Trapezoid**  
   `trapezoid(B: number, b: number, height: number)`  
-  `area.trapezoid(10, 6, 5) ➔ { area: 40 }`
+  `area.trapezoid(10, 6, 5) ➔ 40`
 
 - **Circle**  
   `circle(radius: number)`  
-  `area.circle(3) ➔ { area: 28 }`
+  `area.circle(3) ➔ 28`
 
 ### 🌡️ Temperature Conversions
 Convert between Celsius (°C), Fahrenheit (°F), and Kelvin (K).
@@ -124,4 +124,4 @@ Contributions are welcome! Please follow the [contribution guidelines](https://g
 
 ## License
 MIT © Igor Figueiredo  
-[Full License Text](LICENSE)
\ No newline at end of file
+[Full License Text](LICENSE)
diff --git a/src/area.ts b/src/area.ts
index 7fd6fde..a024dc0 100644
--- a/src/area.ts
+++ b/src/area.ts
@@ -10,10 +10,8 @@ export const area = {
    *
    * base * height
    */
-  rect: (base: number, height: number): AreaResult => {
-    return {
-      area: Math.floor(base * height),
-    };
+  rect: (base: number, height: number): number => {
+    return Math.floor(base * height);
   },
   /**
    * @param base Size of the base of the triangle
@@ -21,10 +19,8 @@ export const area = {
    *
    * (base * height) / 2
    */
-  triangle: (base: number, height: number): AreaResult => {
-    return {
-      area: Math.floor((base * height) / 2),
-    };
+  triangle: (base: number, height: number): number => {
+    return Math.floor((base * height) / 2);
   },
   /**
    * @param D larger diagonal
@@ -32,10 +28,8 @@ export const area = {
    *
    * (D * d) / 2
    */
-  rhombus: (D: number, d: number): AreaResult => {
-    return {
-      area: Math.floor((D * d) / 2),
-    };
+  rhombus: (D: number, d: number): number => {
+    return Math.floor((D * d) / 2);
   },
   /**
    * @param B Larger base
@@ -44,24 +38,15 @@ export const area = {
    *
    * ((B + b) * height) / 2
    */
-  trapezoid: (B: number, b: number, height: number): AreaResult => {
-    return {
-      area: Math.floor(((B + b) * height) / 2),
-    };
+  trapezoid: (B: number, b: number, height: number): number => {
+    return Math.floor(((B + b) * height) / 2);
   },
   /**
    * @param radius Circle radius
    *
    * π * (radius * radius)
    */
-  circle: (radius: number): AreaResult => {
-    return {
-      area: Math.floor(PI * (radius * radius)),
-    };
+  circle: (radius: number): number => {
+    return Math.floor(PI * (radius * radius));
   },
 };
-
-export type AreaResult = {
-  area?: number;
-  perimeter?: number;
-};