$\"\"$

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The bulding construction as a concret section.

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Consider equation is $\"\"$ and $\"\"$ .

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(a)

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Find the area.

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Two holes on the either sides are made.

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The diameter of one hole is $\"\"$ then $\"\"$ .

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The diameter of second hole is $\"\"$ then $\"\"$ .

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Total area of the concrete is the total area face of the section as rectangular shape of the part minus the area of the four holes.

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The area of the face of the section as rectangular shape of the part is $\"\"$

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$\"\"$

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$\"\"$ square meters

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The area of the face of the section is $\"\"$ sq-meters.

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$\"\"$

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(b)

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Find the volume of the concrete.

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Volume $\"\"$ .

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Substitute $\"\"$ in the volume formula.

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$\"\"$

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The volume of face of the section is $\"\"$ cubic-meters.

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$\"\"$

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(c)

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Find weight of the section.

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$\"\"$

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$\"\"$

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$\"\"$

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The weight of the face of the section is $\"\"$ .

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$\"\"$

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(a) The area of the face of the section is $\"\"$ sq-meters.

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(b) The volume of face of the section is $\"\"$ cubic-meters.

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(c) The weight of the face of the section is $\"\"$ .