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Phổ biến Word Problems >

The chu vi of a circle is 17pi m. What is the area, in square meters? Express your answer in terms of pipi

Lời Giải

T h e c i rc u m f ere n ce o f a c i rc l e i s 17 π m . Wha t i s t h e a re a, in s q u a re m e t ers ? E x p ress yo u r an s w er in t er m s o f p iπ

Lời Giải

a re a : 226.98 m^{2}

Các bước giải pháp

Given:

c i rc u m f ere n ce : 17 π m

Bán kính đường tròn đã cho

C i rc u m f ere n ce = 17 π : r = 8.5

Diện tích hình tròn đã cho

r = 8.5 : A = 226.98006 \dots

a re a : 226.98 m^{2}

Ví dụ phổ biến

8 times the sum of a number x and 10 5 years ago alex was 12 times as old as Tom.Alex is 41 now. How old is Tom now?Twice the hiệu of a number and 1.The radius of a circle is 9 m. Find its chu vi in terms of pipi.Colton is going to invest in an account paying an interest rate of 2.4% compounded annually. How much would Colton need to invest, to the nearest cent, for the value of the account to reach 4,100 in 7 years?