Image caption, First work out the area of the triangular faces. The area of a triangle is ½ × base × height. There are two congruent (identical) triangles, so 2 × ½ × base × height = base ...
The surface area of a pyramid can be calculated by adding the area of the base to the sum of the areas of the triangular faces. If the base of the pyramid is a regular polygon, each of the ...
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