Area and Perimeter

The area of a parallelogram

• Area = base × height
• Area = base × base
• Area = base + height
• Area = 2 × (base + height)

The area of a triangle is:

• Area = base + height
• Area = base * height
• Area = 1/3 * base * height
• Area = 1/2 * base * height

Perimeter of a parallelogram is

• P = 2(a + b)
• P = 2ab
• P = 4a
• P = a + b

Area of a circle is:

• A = 2πr
• A = πd
• A = r²/2
• A = πr²

The circumference of a circle is:

• C = 2πr
• C = 4r
• C = 3.14r
• C = πd

The area of a square is:

• A = sxs

• A = 4s
• A = 2s
• A = s + s

The area of a rectangle is:

• A = length - width
• A = length / width
• A = length * width
• A =2( length + width)

The perimeter of a square is:

• 4 times the length of one side
• the length of one side multiplied by 4
• the area of the square
• 2 times the length of one side

The perimeter of a rectangle is:

• P = 2 * (length + width)
• P = length + width
• P = length * width
• P = 2 * length + 2 * width