If you add all of the numbers above together the answer you should get is 13800 grams
The answer is 7985.5 to get this answer you have to do the following
add both of the numbers as so:7,081+8,890=15,971
then divide 15,971÷2=7985.5
To find the surface area of the figure , we need to add the surface area of all the faces
So the surface area of figure = Area of two lateral rectangular faces + Area of two triangular faces + area of base
hence
Surface Area of figure = 2(10*15) + 2( 1/2 * 8 * 12) + (12*15)
= 300 + 96 + 180
= 576 square feet
So correct option is the last one
What the question and what the picture
