Math - Geometry Flashcards
How do you calculate the perimeter of a circle?
2πr (or πd)
What is the formula for the area of a square and rectangle?
A = l x w
What is the formula for the area of a parallelogram?
A = b x h
What is the formula for the area of a trapezoid?
A = ½h (a + b)
a = top; b = bottom
What is the formula for the area of a triangle?
A = ½bh
What is the formula for the area of a right triangle?
A = ½ab
What is the formula to find one side of a right triangle?
a² + b² = c²
c = hypotenuse
What is the formula for the area of a circle?
A = πr²
What is the formula for the area of a semicircle?
A = πr²/2
If told that the area of a square is 25cm², how would you find out the values of the length and width
square 25cm² to find each side
ONLY WORKS FOR SQAURES BC THEY HAVE EQUAL SIDES
What is the formula for the volume of a sphere?
V = ⁴⁄₃πr³
What is the formula for the volume of a square/rectangular prism?
V = l x w x h
What is the formula for the volume of a cylinder?
V = πr²h
What is the formula for the volume of a triangular prism?
V = ½bhl
What is the formula for the volume of a cone?
V = πr²h / 3
