ko

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

인기 있는 Word Problems >

The 원둘레 of a circle is 15pi ft. What is the area, in square feet? Express your answer in terms of pipi.

해법

T h e c i rc u m f ere n ce o f a c i rc l e i s 15 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 .

해법

a re a : 176.71 f t^{2}

솔루션 단계

Given:

c i rc u m f ere n ce : 15 π f t

주어진 원 반지름

C i rc u m f ere n ce = 15 π : r = 7.5

주어진 원 영역

r = 7.5 : A = 176.71458 \dots

a re a : 176.71 f t^{2}

인기 있는 예

A square piece of glass has a perimeter of 28 centimeters. How long is each side of the piece of glass?2500 dollars is placed in an account with an annual interest rate of 9%. To the nearest year, how long will it take for the account value to reach 7500 dollars?What is the result when the number 28 is decreased by 23%?The sum of one and seven times a number is-69. What is the number?Find the radius of a 원형 with an area of 615.75