Pi is equal to the amount of times the diameter fits around a circle, in this case, 7xPi is equal to your total cost. 7Pi=176, to find the cost per foot divid 176 by 7 foot, this gives you the amount. I hope you found this helpful.
(x-4)(x+9) is equivalent to x^2+5x-36
all you need to do is factor the equation
I can't see the whole fraction
Perimeter: P <span>= <span>4(a) </span></span><span>= <span>4 </span></span>× <span><span>2 </span></span><span>= <span>8
To find the area:
Perimeter </span></span>÷ 4 (since a square has 4 sides) = 2
Length of one side of a square = 2
Formula of area: length × width = area
Area : 2 × 2 = 4
The area of the square is 4