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3 years ago

Find the surface area

Mathematics

2 answers:

Arlecino [84]3 years ago

5 0

Answer:

144 units squared

Step-by-step explanation:

The formula to find the surface area of a right triangular prism is SA = bh + (s1 + s2 + s3)H. bh is the base times the height of the right triangle, and notice we do not do 1/2 base times height because there are 2 right triangles, one in the front and the other at the other end of the prism. This is 4*3 = 12 units squared. Next, we calculate the sum of the length of the sides of the 3 rectangles by the height of the prisms. We see that the height of this prism is 11 units, and there are sides of length 3, 4, and 5 units. So if we plug it into the formula, we have (3 + 4 + 5) * 11 = 12 * 11 = 132 units. Add that to the area of the triangles we calculated earlier and you have a total surface area of 144 units squared.

Helen [10]3 years ago

3 0

We can also label the length (l), width (w), and height (h) of the prism and use the formula, SA=2lw+2lh+2hw, to find the surface area. Hope this helps!

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brainly.com/question/13818690

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Vika [28.1K]

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Step-by-step explanation:

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Find the surface area ​

Find the surface area