Answer:
x=6
Step-by-step explanation:
multiply 7 by x and 7 by -4. You get 7x-28=14, add 28 to 14, which is 42. So 7x=42, then divide 7 on both sides, and you get x=6.
x = 6
7(x-4)=14
Divide both sides by 7
7(x - 4)/7 = 14/7
x - 4 = 2
Add 4 both sides
x - 4 + 4 = 2 + 4
The formula for the area of a circle is Area = PI x r^2
Area = 3.142 x 11.2^2
Area = 394.13 square cm.
