# In the equation a = πr^{2}, π (pi) is a _____________

π(pi) is an irrational number which is either 22/7 or usually approximated to the value of 3.14

## Answer: In the equation a = πr^{2}, π (pi) is a __numerical constant.__ The value of π is always a constant. Pi value approximated to 6 decimal places that is π = 3.141592

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