80, 81, 82, 83, 84, 85, 86, 87, 88, 89
This is incorrect because 2 + 5.8 = 7.8. And 7.8 does not equal 6. 2 + 4 = 6 is the correct answer. This could be represented by this:
2 + x = 6.
Subtract two from both sides to get:
x = 4.
When substituted back into the equation:
2 + (4) = 6.
The answer is b because you are going rate the determine the cause of bias
Area formula: pi * radius * radius
Radius=1/2diameter=1/2(7)=3.5
3.5*3.5*pi=12.25pi square feet
Circumference formula: pi * diameter
7*pi=7pi feet
3.1 ft longer because you have to minus 12.5 by 9.4 , which equals 3.1 feet
