use a ruler to measure the sides then do length times width
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it's the same as a rectangle. LA= Ph (Perimeter x's Height)
to find the surface area you have to first find the area of each part then add the areas together.
to find the surface area of the triangle we just need to multiply the length with breath. area=lengthXbreadth
You find the surface area of each of its six faces and add them together.
You will need to find the surface area of each face and add them together.