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math test facts
things I need to know for the math test
Question | Answer |
---|---|
square perimeter | length + length + width + width |
area of a square | length . width |
perimeter of a triangle | add all sides |
area of triangle | 1/2 . base . height |
the diameter is what times the radius | 2 times the radius |
radius | half of the diameter |
circumference of a circle | C= 2 pi/ times radius |
circumference when diameter is given first | c=d pi |
Area of a circle | pi radius to the second power= r times 2 pi |
trapezoid area | 1/2 height times base1 and base2 |