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The general formula for the total surface area of a regular pyramid is T . S . A . = 1 2 p l + B where p represents the perimeter of the base, l the slant height and B the area of the base. Example 2:
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24 Μαρ 2017 · Explanation: First, subtract B from each side of the equation to isolate the term containing P while keeping the equation balanced: S − B = − B + B + (1 2)P l. S − B = 0 + (1 2)P l. S − B = (1 2)P l. Next, multiply each side of the equation by 2 to eliminate the fraction while keeping the equation balanced: 2(S −B) = 2 × (1 2)P l.
11 Σεπ 2017 · You must get p by itself, so first subtract B from both sides: SA-B=1/2lp. Then multiply both sides by 2, which cancels out the 1/2: 2SA=lp. Then divide both sides by l: (2SA)/l=p.
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Surface area of a regular pyramid: S=B+ 1 2 Pl S is the surface area, B is the area of the base, P is the perimeter of the base and l is the slant height of the pyramid. Lateral area of a regular pyramid: L= 1 2 Pl L is the lateral area, P is the perimeter of the base and l is the slant height of the pyramid Volume of a regular pyramid: V= 1 3
The total surface area of a pyramid is obtained by adding the area of all its faces (both the base and the side faces). The total surface area of a pyramid whose base perimeter is 'P', the base area is 'B', and slant height is 'l' is calculated using the formula TSA = (1/2) Pl + B.
