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Populaire Word Problems >

The area of a circle is 81pi mm^2. What’s its circonférence?

Solution

T h e a re a o f a c i rc l e i s 81 π m m^{2} . Wha t ’ s i t s c i rc u m f ere n ce ?

Solution

c i rc u m f ere n ce : 18 π mm

+1

Décimale

56.54866 \dots

étapes des solutions

Given:

a re a : 81 π m m^{2}

Cercle de rayon donné

A re a = 81 π : r = 9

Cercle de circonférence donnée

r = 9 : C = 18 π

c i rc u m f ere n ce : 18 π mm

Exemples populaires

find the conditional probability, in a single roll of two fair 6-sided dice, that the sum is greater than 9, given that neither die is a six The area of a circle is 81𝜋 square feet. What is the circonférence?The area of a cercle is 0.0314 square miles. What is the cercle's radius The circonférence of a circle is 8𝜋 kilometers. What is the area?A cercle has a radius of 10.5 centimeters. What is the area of the cercle? Use 3.14 for pi