Question

Use a net to find the surface area of the right triangular prism shown below:
Three rectangles next to each other with a width of 8 feet. The first and second rectangles length are unknown, and the last is 13 feet long. There are two right triangles above and below the last rectangle. One is labeled with a base of 5 feet and a height of 12 feet.
(3 points)
a
88 square feet
b
232 square feet
c
283 square feet
d
300 square feet

Answer 1

Answer:

A=308 ft

2

is the total surface area of the prism.

Step-by-step explanation:

Since given diagram show the opened view of the surface area of a prism with the two right angled triangle faces and a base and two inclined sides. having the length of 13 feet each due to its symmetry and width as 8 feet as shown.

From the given figure a prism of right angled triangle can be obtained when we fold form the dotted lines.

So the total surface area:

A=2\times (8\times 13)+(8\times 5)+2\times (\frac{1}{2}\times 5\times 12 )A=2×(8×13)+(8×5)+2×(

2

1

×5×12)

A=308\ ft^2A=308 ft

2

Step-by-step explanation:

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