Rectangular Prism:
Triangular Prism:
The Net: 
First remember that : its bxh divided by 2, so its 9x8 divided by 2 which is 36.
10+9+8= 27
27 x 5= 135+36+36=207cm² which is the answer.
Cylinder:
d÷2=R 8÷2=r 4mm=r
*VOLUME*
CUBE:
Cylinder:
Volume of triangular prisms:
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