Volume & Surface Area (Edexcel IGCSE Maths A (Modular))

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    What is the formula for the volume of a cuboid?

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  • What is the formula for the volume of a cuboid?

    The formula for the volume of a cuboid is V equals l cross times w cross times h

    Where:

    • V equalsvolume

    • l equalslength

    • w equalswidth

    • h equalsheight

  • What is the formula for the volume of a cylinder?

    The formula for the volume of a cylinder is V equals pi r squared h

    Where:

    • V equalsvolume

    • r equalsradius

    • h equalsheight

  • What is the formula for the volume of a cone?

    The formula for the volume of a cone is V equals 1 third pi r squared h

    Where:

    • V equalsvolume

    • r equalsradius

    • h equalsperpendicular height

  • What is the formula for the volume of a sphere?

    The formula for the volume of a sphere is V equals 4 over 3 pi r cubed

    Where:

    • V equalsvolume

    • r equalsradius

  • What is the formula for the volume of a prism?

    The formula for the volume of a prism is V equals A l

    Where:

    • V equalsvolume

    • A equalscross-sectional area

    • l equalslength

  • What is a frustum?

    A frustum is a truncated (chopped-off) cone.

    E.g.

    A truncated cone (frustum).
  • How can the volume of a hemisphere be found?

    The volume of a hemisphere can be found by halving the volume of the complete sphere.

  • How can the volume of a frustum be found?

    The volume of a frustum is the volume of the larger cone minus the volume of the smaller cone that has been 'cut off'.

  • What is the formula for the surface area of a cylinder?

    The formula for the surface area of a cylinder is A equals 2 pi r squared plus 2 pi r h

    Where:

    • A equals surface area

    • r equalsradius

    • h equalsheight

  • True or False?

    The formula for the curved surface area of a cone is A equals pi r l plus pi r squared

    Where:

    • A equalssurface area

    • r equalsradius

    • l equalsslant height

    False.

    A equals pi r l plus pi r squared is the total surface area of a cone.

    The formula for the curved surface area of a cone is A equals pi r l

    Where:

    • A equalssurface area

    • r equalsradius

    • l equalsslant height

    (pi r squared is the area of the circular base of the cone.)

  • What is the formula for the surface area of a sphere?

    The formula for the surface area of a sphere is A equals 4 pi r squared

    Where:

    • A equalssurface area

    • r equalsradius

  • True or False?

    The surface area of a hemisphere comprises the surface area of a sphere and the area of a circle of the same radius.

    False.

    The surface area of a hemisphere comprises half the surface area of a sphere, and the area of a circle of the same radius.

  • True or False?

    The surface area of a cuboid consists of three pairs of equal rectangles.

    True.

    The surface area of a cuboid consists of three pairs of equal rectangles.

  • What is the formula for the total surface area of a cone?

    The formula for the total surface area of a cone is A equals pi r squared plus pi r l

    Where:

    • A equalssurface area

    • r equalsradius

    • l equalsslant height

  • True or False?

    The net of a cylinder consists of two circles and a rectangle.

    True.

    The net of a cylinder consists of two circles and a rectangle.