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受欢迎的 Word Problems >

The area of a circle is 49𝜋 square centimeters. What is the 周长?

解答

T h e a re a o f a c i rc l e i s 49​𝜋 s q u a re ce n t im e t ers . Wha t i s t h e c i rc u m f ere n ce ?

解答

c i rc u m f ere n ce : 14 π c m

+1

十进制

43.98229 \dots

求解步骤

Given:

a re a : 49 π c m^{2}

给定

A re a = 49 π

的圆半径:

r = 7

给定

r = 7

的圆周长:

C = 14 π

c i rc u m f ere n ce : 14 π c m

流行的例子

Use a geometric formula to solve the problem.A circle has an area of 36pi square inches. Find the 半径.The 周长 of a circle is 14𝜋 kilometers. What is the diameter?two more than the product of a number and 5 equals 8 five times a number increased by 8 is 32. Find the number The 直径 of a circle is 5 meters. What is the area?