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Find the areas of the rectangles and triangles. Add them together.

Q: What strategies are there to find the surface area of three-dimensional shapes made from rectangles and triangles?

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Circles, squares, rectangles, and triangles are solids that have a flat surface.

Work out each area of the 5 faces individually and then add them together.

A triangular prism has 5 sides. Three are rectangles and two are triangles. If you fold the net out flat you can get the dimensions and find the surface area. Each rectangle is length by width. And the triangles should be congruent and remember are length times height divided by two.

I never noticed a difference. November 26, 2007: (I'm assuming you're referring to two rectangles, not four true squares.) Sandwiches cut into triangles expose more surface area along the cut edges than those cut into squares. For a square sandwich, triangles create 23% more surface area. More surface area means more exposure to the flavor-enhancing effects of oxygen compounds in the air.

Yes, if it is bound by plane figures, just add the area of each plane figure. If it has a curved surface, divide it into many small pieces, to approximate the area with small rectangles or triangles, then add them up.

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Circles, squares, rectangles, and triangles are solids that have a flat surface.

Work out each area of the 5 faces individually and then add them together.

A triangular prism has 5 sides. Three are rectangles and two are triangles. If you fold the net out flat you can get the dimensions and find the surface area. Each rectangle is length by width. And the triangles should be congruent and remember are length times height divided by two.

its not real texture its one of the other two

I never noticed a difference. November 26, 2007: (I'm assuming you're referring to two rectangles, not four true squares.) Sandwiches cut into triangles expose more surface area along the cut edges than those cut into squares. For a square sandwich, triangles create 23% more surface area. More surface area means more exposure to the flavor-enhancing effects of oxygen compounds in the air.

Yes, if it is bound by plane figures, just add the area of each plane figure. If it has a curved surface, divide it into many small pieces, to approximate the area with small rectangles or triangles, then add them up.

Calculate the area of the 2 triangles first, which is base multiplied by height, then divided by 2. Then find the area of the 3 rectangles, which is length multiplied by width. Finally, just add all the areas together, and there you go! You get the surface area! :D <3

Triangles, trapezoids, and rectangles have these qualities in common:They are all polygonsThey all have exterior angles that add up to 360 degreesThey will tessellateThey all have a perimeterThey all have a surface areaThey are all constructed from line segments

Spherical triangles as on the earth's surface.

Look for the surface area of a cylinder as well as the circles and triangles

A square pyramid has.

A compact surface is a surface which is also a compact set. A compact surface has a triangulation with a finite number of triangles.