Step 1:

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Observe the figure:

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Length of the base of the pyramid is $\"\"$ .

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Height of the each triangle surface is $\"\"$ .

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(a)

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Total surface area of the pyramid is $\"\"$ .

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Threfore, $\"\"$

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Substitue corresponding values in the formula.

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$\"\"$

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$\"\"$ .

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Total surface area of the pyramid is $\"\"$ sq cm. \ \

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(b)

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Length of the base of the pyramid is $\"\"$ .

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Height of the each triangle surface is $\"\"$ .

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Find the volume of the pyramid.

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Volume of the square pyramid $\"\"$ .

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Substitue corresponding values in the formula.

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$\"\"$

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$\"\"$ .

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Volume of the pyramid is $\"\"$ cubic cm.

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(b)

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Length of the base of the pyramid is $\"\"$ .

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Altitude of the pyramid is $\"\"$ .

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Find the volume of the pyramid.

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Volume of the square pyramid $\"\"$ .

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Where $\"\"$ is the area of the base. \ \

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Area of the base $\"\"$ .

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Substitue corresponding values in the formula.

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$\"\"$

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$\"\"$

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Volume of the pyramid is $\"\"$ cubic cm.

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$\"\"$

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$\"\"$ $\"\"$ .

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