ja

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

人気のある Word Problems >

The 円周 of a circle is 10pi ft. What is the area, in square feet? Express your answer in terms of pipi

解

T h e c i rc u m f ere n ce o f a c i rc l e i s 10 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

a re a : 25 π f t^{2}

+1

十進法表記

78.53981 \dots

解答ステップ

Given:

c i rc u m f ere n ce : 10 π f t

指定された円の半径

C i rc u m f ere n ce = 10 π : r = 5

指定された円の面積

r = 5 : A = 25 π

a re a : 25 π f t^{2}

人気の例

Two planes start out at two different airports. The planes are 2 584 km apart. The planes start flying towards each other. One plane is flying at 352 km/h and the other plane at 294 km/h.If both planes started their journey at the same time, how long will they take to pass each other?Sara went to lunch with her friend. Sara's lunch cost 12.50 but she wants to leave a 20% tip. What is the total cost after tip?Emma invested 19,000 in an account paying an interest rate of 4.2% compounded continuously. Assuming no deposits or withdrawals are made, how long would it take, to the nearest year, for the value of the account to reach 40,000?13 is 50% of what number Between which two consecutive integers doessqrt(150)