Surface and surface area

There are 25 NRICH Mathematical resources connected to Surface and surface area

problem

All wrapped up

Age

7 to 11

Challenge level

What is the largest cuboid you can wrap in an A3 sheet of paper?

problem

The big cheese

Age

7 to 11

Challenge level

Investigate the area of 'slices' cut off this cube of cheese. What would happen if you had different-sized block of cheese to start with?

problem

Peeling the apple or the cone that lost its head

Age

14 to 16

Challenge level

How much peel does an apple have?

problem

Wrapping presents

Age

7 to 11

Challenge level

Choose a box and work out the smallest rectangle of paper needed to wrap it so that it is completely covered.

article

When the angles of a triangle don't add up to 180 degrees

This article outlines the underlying axioms of spherical geometry giving a simple proof that the sum of the angles of a triangle on the surface of a unit sphere is equal to pi plus the area of the triangle.

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Surface and surface area

All wrapped up

The big cheese

Peeling the apple or the cone that lost its head

Wrapping presents

When the angles of a triangle don't add up to 180 degrees