vi

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Phổ biến Word Problems >

find the area of a circle with a chu vi of 21.98

Lời Giải

f in d t h e a re a o f a c i rc l e w i t h a c i rc u m f ere n ce o f 21.98

Lời Giải

a re a : 38.44549 \dots

Các bước giải pháp

Given:

c i rc u m f ere n ce : 21.98

Bán kính đường tròn đã cho

C i rc u m f ere n ce = 21.98 : r = 3.49822 \dots

Diện tích hình tròn đã cho

r = 3.49822 \dots : A = 38.44549 \dots

a re a : 38.44549 \dots

Ví dụ phổ biến

Fatima is 7 years older than her brother. Three times the sum of their ages is 39.:Write and solve an equation to find Fatima's age.sum of 5 and a number The chu vi of a circle is 37.68 meters. What is the circle's diameter?Paul's age is six less than twice bobs age. two years ago, the sum of their ages was 29. How old is Paul?The product of 2 and a number is the same as 12 minus the number. Find the number.