What is the surface area of a triangular prism

608 (D)

Step-by-step explanation:

To find the area of the prism, just add all the areas in the nets together.  

The rectangle in the middle has an area of 192 because it is a 12x16 triangle so you multiply the sides.

Both the rectangles on the top and bottom have an area of 160 because they are both a 10x16.  The total of the 2 rectangles would be 320 because 160+160=320.

The triangles on the right each have an area of 48 because the Base=12 and the Height= 8.  The formula for finding the area of a triangle is 1/2(BH).  1/2(12*8)= 1/2(96)= 48.  There are 2 triangles like this so the totla area of both triangles is 96.

To find the surface area, you just add them all up.  96+320+192= 608

the smallest possible measurement of the width is 14 feet

step-by-step explanation:

let's assume length of parallelogram is 'l'

width of parallelogram is 'w'

the perimeter of a parallelogram must be no less than 40 feet

so, we get

we are given

length of parallelogram is 6 feet

so,

l=6

we can plug it

now, we can solve for w

subtract both sides by 12

divide both sides by 2

and we get

so,

the smallest possible measurement of the width is 14 feet

step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.