please help and make sure all the answers and work is right please

Algebra
Tutor: None Selected Time limit: 1 Day

Feb 28th, 2015

1) since the area A of a circle is gib├╣ven by the subsequent formula:

A = 3.14* R^2, where R is the radius, then I can write:

R =sqrt(  A/3.14 ) = sqrt(153.86/3.14) = 7 cm


2) Here please note that the length C of a circumference is given by the subsequent formula:

C = 2*3.14*R  where R is the radius of our circumference.

so we have:

R = diameter/2 = 18/2 = 9 cm

and the length C of our circumference, is:

C = 2*3.14*9= 56.52 cm


Feb 28th, 2015

Studypool's Notebank makes it easy to buy and sell old notes, study guides, reviews, etc.
Click to visit
The Notebank
...
Feb 28th, 2015
...
Feb 28th, 2015
Dec 5th, 2016
check_circle
Mark as Final Answer
check_circle
Unmark as Final Answer
check_circle
Final Answer

Secure Information

Content will be erased after question is completed.

check_circle
Final Answer