The plan of a building is in the form of a rectangle with center line dimensions of outer walls as 12.6 m × 17.6 m. The thickness of the wall in superstructure is 40 cm, the plinth area of the building will be

The plan of a building is in the form of a rectangle with center line dimensions of outer walls as 12.6 m × 17.6 m. The thickness of the wall in superstructure is 40 cm, the plinth area of the building will be
1). 210 m²
2). 234 m²
3). 247 m²
4). 284 m²

Given:

Dimensions of outer walls = 12.6 m × 17.6 m.

Thickness of the wall = 40 cm = 0.40 m

Plinth area of the building = $(\left( {12.6 + \frac{{0.40}}{2} + \frac{{0.40}}{2}} \right) \times \left( {17.6 + \frac{{0.40}}{2} + \frac{{0.40}}{2}} \right))$

Plinth area of the building = (13 × 18) = 234 m²

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