zs

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

受欢迎的 Word Problems >

The 周长 of a circle is 7pi ft. What is the area, in square feet? Express your answer in terms of pipi.

解答

T h e c i rc u m f ere n ce o f a c i rc l e i s 7 π f t . Wha t i s t h e a re a, in s q u a re f ee t ? E x p ress yo u r an s w er in t er m s o f p iπ .

解答

a re a : 38.48 f t^{2}

求解步骤

Given:

c i rc u m f ere n ce : 7 π f t

给定

C i rc u m f ere n ce = 7 π

的圆半径:

r = 3.5

给定

r = 3.5

的圆面积:

A = 38.48451 \dots

a re a : 38.48 f t^{2}

流行的例子

You deposit 3000 in an account earning 6% interest compounded monthly. How much will you have in the account in 10 years?Round to the nearest penny.The sum of a number and negative 12 is three times the number decreased by 24. What is the number?If 500 yields 55.03 in simple interest over 5 years, what is the annual rate?4000 is invested for 14 years with an APR of 4% and monthly compounding. What is the balance after 14 years?Twice the 差集 between a number, x, and forty is three times the number.