Maths Equations

Maths Equations

1. Area of a Rectangle

   • Multiply the length by the width.
     • A=L×W

2. Area of a Triangle

   • Multiply the base by the perpendicular height and divide by two.
     • A=0.5bh

3. Area of a Parallelogram

   • Multiply the base by the height.
     • A=b×h

4. Area of a Trapezium

   • Add together the parallel sides and multiply by the height. Divide your answer by two.
     • A=1/2(a+b)h

5. Area of a Circle

   • Square the radius and multiply by pi.
     • A=πr2

6. Circumference of a Circle

   • Double the radius and multiply by pi or multiply the diameter by pi.
     • C=2πr or C=πd

7. Volume of a Cuboid

   • Multiply the length by the width by the height.
     • V=lwh

8. Volume of a Prism

   • Multiply the cross sectional area of the prism by its length.

9. Volume of a Sphere

   • Cube the radius and multiply by pi. Multiply your answer by four then divide by three.
     • V=4/3πr3

10. Surface Area of a Sphere

    • Square the radius and multiply by pi. Multiply your answer by four.
      • A=4πr2

11. Volume of a Cone

    • Square the base radius of the cone and multiply by pi. Multiply your answer by the perpendicular height. Divide your answer by three.
      • V=1/3πr2h

12. Curved Surface Area of a Cone

    • Multiply the base radius of the cone by pi. Multiply your answer by the length of the side of the cone.

13. volume of cylinder