Which of the following best describes the surface area of a solid figure a) the sum of the areas of its non-base surface b) the area of its base surfaces c) the sum of the areas of its exterior surfaces d)the distance around its base surfaces

Option (c) is correct.

The surface area of a solid figure is the sum of the areas of its exterior surfaces.

Step-by-step explanation:  

Given : the surface area of a solid figure

We have to choose which out of given options  best describes the surface area of a solid figure.

Since, the surface area of a solid figure is the area of its outer surfaces that is the sum of the areas of its exterior surfaces.    

We can find the surface area of three dimensional figures using two dimensional view that is from the top view, the side view and the front view.

So, the surface area of a solid figure is the sum of the areas of its exterior surfaces.

just take the area of the square and then the area of the circle then subtract the circle area from the squares area

step-by-step explanation:

80° is the measure of gh

step-by-step explanation:

circle f is congruent to circle j

we have two circle with center f and j.

both circles are congruent. the radius of the circle would be equal.

see the attachment for the circle.

we are given ∠efd ≅ ∠gjh

therefore, arc (ed) = arc (gh)     (∴ circle f is congruent to circle j)

but ∠dfe=80°=arc (ed)

therefore, arc (gh) = 80°

thus, 80° is the measure of gh