Hey, 9-05. Today in class, we had a math test. It was mostly on surface area and bit on symmetry too. Today I will be showing you how to do questions on the test we had. One thing is, that you really need to know your formulas for all the shapes and also know when to use them.
These question are examples of what you need to know in order to answers the questions right. But they are not same as the test. The reason for this is that not everybody has taken the test yet and I don't have the test in front of me so I don't remember the exact measurements that were on the test.
These are some examples:
To figure the cylinder you need to know the formula for a cylinder.
S.A. = 2πr²+2πrh
This is the formula for a rectangular prism
Thanks for reading.
The homework is on the grade 9 homepage.