Friday, 4 November 2011

Maths Extension

Today we learnt how to calculate the volume of prisms, pyramids and spheres and what makes a shape a prism or pyramid.
The rule for calculating the volume of a prism is the cross section's area times the height.
The rule for calculating the volume of a pyramid it the bass's area times the height divided by 3.
The rule for calculating the volume of a sphere is 4/3 times Pi times radius cubed.
For the area of a circle times Pi and the radius squared.
For the area of a rectangle just times the sides together.
For the area of a trapezium add the bottom and top edge together and times it by the height then divide it by two.

We then calculated the volume of some common things in all sorts of shapes.

No comments:

Post a Comment

Thank you for your comment. It will appear on this page as soon as it has been moderated by a teacher.