2πr^2 + 2πrh.
r is the radius circle face.
h is the length/height of the cylinder.
πr^2 is the formula for circles, and there are 2 circles in a cylinder. So 2 x πr^2 would be determine the area of the 2 circles.
2πr is the formula for circumference. 2πr x h would the area of the curved face.
This is because the total needs to be equal to 180 degrees. Since obtuse angles are greater than 90 degrees, then it needs an acute angle (lower than 90 degrees) to supplement it to equal 180
860 *11/100=9460/100=94.6
94.6 is earned
<span>Common difference is just the number you pick minus the previous number,
You have </span><span>6, 9.4, 12.8, 16.2, . . .
d=9.4-6=3.4
d=12.8-9.4=3.4
The common difference is 3.4</span>
