Area Calculator

Calculate the area of various geometric shapes including circle, triangle, rectangle, and parallelogram. Perfect for students, teachers, and professionals.

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Circle Area Calculator

Calculate the area of a circle using radius, diameter, or circumference. Uses π = 3.14159 for calculations.

Circle Area Result
0
Area
0
Circumference
Calculation Details
Input Value N/A
Formula Used N/A
Radius N/A

Triangle Area Calculator

Calculate area using base and height, or using three sides (Heron's formula).

Triangle Area Result
0
Area
0
Perimeter
Calculation Details
Method N/A
Formula N/A
Semi-perimeter N/A

Rectangle Area Calculator

Calculate area, perimeter, and diagonal of a rectangle using length and width.

Rectangle Results
0
Area
0
Perimeter
0
Diagonal
Calculation Details
Length N/A
Width N/A
Aspect Ratio N/A

Parallelogram Area Calculator

Calculate area and perimeter of a parallelogram using base, height, and side length.

Parallelogram Results
0
Area
0
Perimeter
Calculation Details
Base N/A
Height N/A
Side Length N/A