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Popular Word Problems >

The area of a circle is 4pi cm. What is the circumference, in centimeters? Express your answer in terms of pipi.

Solution

T h e a re a o f a c i rc l e i s 4 π c m . Wha t i s t h e c i rc u m f ere n ce, in ce n t im e t ers ? E x p ress yo u r an s w er in t er m s o f p iπ .

Solution

c i rc u m f ere n ce : 4 π c m

+1

Decimal

12.56637 \dots

Solution steps

Given:

a re a : 4 π c m^{2}

Radius given

A re a = 4 π : r = 2

Circle circumference given

r = 2 : C = 4 π

c i rc u m f ere n ce : 4 π c m

Popular Examples

translate the sentence into algebraic symbols.The quotient of a number x and four is five.partition numbers 6x^6 − 5x^5 two consecutive odd numbers are chosen, three times the larger number is 19 more than 4 times the smaller number, what are the two numbers Write the word sentence as an equation.The sum of a number x and 4 equals 12.The sum of three consecutive even numbers is 156 . Find the integers.