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Phổ biến Word Problems >

A circular table has a chu vi of 9191 inches. What is the area of the table? If needed, use an approximation for �pi and round your answer to one decimal place.

Lời Giải

A c i rc u l a r t ab l e ha s a c i rc u m f ere n ce o f 9191​ in c h es . Wha t i s t h e a re a o f t h e t ab l e ? I f n ee d e d, u se an a pp ro x ima t i o n f or � π ​​ an d ro u n d yo u r an s w er t o o n e d ec ima l pl a ce .

Lời Giải

a re a : 6722265.6 in c h^{2}

Các bước giải pháp

Given:

c i rc u m f ere n ce : 9191 in c h

Bán kính đường tròn đã cho

C i rc u m f ere n ce = 9191 : r = \frac{9191}{2 π}

Diện tích hình tròn đã cho

r = \frac{9191}{2 π} : A = \frac{84474481}{4 π}

a re a : \frac{84474481}{4 π} in c h^{2}

Làm tròn

\frac{84474481}{4 π}

tới gần nhất 1 decimal places:

6722265.6

a re a : 6722265.6 in c h^{2}

Ví dụ phổ biến

The area of a circle is 4.3 cm2. Find the chu vi of the circle, rounding your answer to 3 significant figures.Find the accumulated value of an investment of 9000 at 7.5% compounded continuously for 6 years.Question 2 options:The perimeter of a rectangular garden is 316 feet. If the length of the garden is 92 feet, what is its width? feet hat is the bán kính of a sphere with a volume of 5271m^3 , to the nearest tenth of a meter?5700 dollars is placed in an account with an annual interest rate of 6.5%. To the nearest year, how long will it take for the account value to reach 20900 dollars?