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Here is one face of a cuboid and one face of a right-angles triangular
prism.
5m
12 m
5 m
13 m
12 m
Both solids are 15cm long.
The area of a triangle is half the area of a rectangle with the same
base and height, will the surface are of the triangular prism be half
that of the cuboid?
Calculate the surface area of each prism, which calculations are the
same and which are different?

Here is one face of a cuboid and one face of a rightangles triangular prism 5m 12 m 5 m 13 m 12 m Both solids are 15cm long The area of a triangle is half the a class=


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