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How to find surface area of rectangles and triangles
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How to find surface area of rectangles and triangles

User Ralph Shillington
by
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1 Answer

4 votes
Rectangle:
2 (L×W + W×H + L×H) or 2LW + 2WH + 2

Triangle:
BH + 2Ls + LB
User Rune Kaagaard
by
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