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what are the formulas for area and circumference?
all of them. its on our 8th grade test! and I forgot them
since when did radius squared become the diamter?
are squared is not equal to 2r... (unless are happens to be 2...)
The area of a circle is pi r2 (radius squared multiplied by pi)
The circumference of a circle is pi x d (pi multiplied by the diameter) (diameter = 2r)
Area of triangle: 1/2bh Area of square: length x width circumference of circle: Pi x radius squared or Pi x diameter or 2Pi x radius
Area = base x height divided by 2 (triangle) Area = length x width (square/rectangle)
Circumference = Pi x radius squared
area= length multiply times with circumference is Pi times diameter