How do you calculate the area of a circle with a radius of 13 mm?

1 Answer
sankarankalyanam
Jan 16, 2018

#A = 531(1/7) = 531.1429#

Explanation:

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Area of a circle #A = pi r^2# where #pi = 22/7, r color(white)(x) the color(white)(x) radius#

Given #r = 13 mm#

#A = (22/7) * 13^2 = (22*169) / 7

# = 3718 / 7 = 531 (1/7) = 531.1429#

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