The surface area of a sphere of radius r is A = 4π*r^3.
Since the radius in this case is 7 cm (half the 14 cm diameter), the area of this sphere is
A = 4π(7 cm)^2, or 196π cm^2.
See picture for answer. I hope this helps you.
We can use the point-slope equation:
m, the slope, is 3/4:
To find b, we plug in the point (4,1/3):
Therefore, the point-slope equation is
Now we have to see which answer matches.
Since this is not the same, we try the next one.
This is the same, so this is the answer. We should still double-check the other answers.
This one is not equivalent.
This one also does not work.
The answer is the second one:
3.14 x 8^2 = 200.96 (divided by) 2 = 100.48
1/2 (8 x 12) = 48 x 2 = 96
100.48 + 96 = 196.48
A = 196.48