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Formulas for area of rectangles, triangles, parallelograms, trapezoids and circles. Also, perimeter of rectangle and circumference of circle.
| 661928439 | Area of rectangle | A=length x width |  |
| 661928440 | Area of triangle | A=½(base x height) |  |
| 661928441 | Area of trapezoid | A= ½ h(b₁+ b₂) |  |
| 661928442 | Area of parallelogram | A=bh |  |
| 661928443 | Area of circle | A=πr² |  |
| 661928444 | Circumference Circle | C = 2πr or C = πd |  |
| 661928445 | Perimeter of Rectangle | P = 2L + 2w |  |
| 661928446 | Area of a Square |  |
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