What you know is
area=706.5in^2
formula is 3.14*r*r
what to do is set up an equation
706.5=3.14*r*r
after you divide both sides by 3.14 to cancel it out your left with
225=r^2
then you would take the root of both sides to get
r= 15 , -15
<span>3*2 (6 - 4) = 6 * 2 = 12.
* = Times (x)</span>
Answer:45cm
Explanation: If the whole paper is 12 by 15 you have to divide them both by 2!
12 divide by 2=6
15 divide by 2=7.5
Then you have to multiply them together to find the area.
6x7.5=45
So therefore the answer is 45cm.