What is Surface Area? A>The total space inside a figure.
B>The sum of all the area's of the faces on a figure.

B

Step-by-step explanation:

Option A is volume, which is the total space inside a object

Option B refers to the sum of area of planes on the exterior of an object only.

Refer to picture attached for a clearer visual.

d 25 pi/6

step-by-step explanation:

the diameter is 10 inches

the radius is 1/2 of the diameter or 5 inches

the area of the circle is

a = pi r^2

  = pi 5^2

  = 25 pi

the slice is 60 degrees of the entire circle.

60 degrees out of 360   60/360 = 1/6

the area of the slice is 1/6 of the circle

a slice = 1/6 a circle

a slice = 1/6 * 25 pi