To calculate perimeter, circumference and area, use these formulae: Area of a circle = π × r2 Circumference of a circle = 2π × r Area of rectangle = width x length Perimeter of rectangle = (width x 2) + (length x 2) Related: 11 Plus (11+) Maths Practice Test: Perimeter and Area
To calculate perimeter, circumference and area, use these formulae:
Area of a circle = π × r2
Circumference of a circle = 2π × r
Area of rectangle = width x length
Perimeter of rectangle = (width x 2) + (length x 2)
Related: 11 Plus (11+) Maths Practice Test: Perimeter and Area
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