A wall of room is of dimension 5 m - 4 m- It has a window of dimension 1-5 m - 1 m and door of dimension 2-25 m - 1 m- Find the area of the wall which is to be painted-A- 18-35 m 2B- 16-25 m 2C- 22-45 m 2D- None of these

The correct option is B 16.25 Area of wall =5 m × 4m = 20m^2 Window of dimension = 1.5 m × 1 m = 1.5 m^2 Door of dimension = 2.25 m × 1 m = 2.25 m^2 Required a ...

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Standard VI

Mathematics

Area of Rectangle

A wall of roo...

Question

A wall of room is of dimension $5 m \times 4 m$ . It has a window of dimension $1.5 m \times 1 m$ and door of dimension $2.25 m \times 1 m$ . Find the area of the wall which is to be painted.

18.35

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16.25

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22.45

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None of these

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Solution

The correct option is B 16.25
Area of wall = $5 m \times 4 m = 20 m^{2}$
Window of dimension = $1.5 m \times 1 m = 1.5 m^{2}$
Door of dimension = $2.25 m \times 1 m = 2.25 m^{2}$
Required area of the wall, which to be painted = Area of wall – (Area of window + Area of door)
$= 20 m^{2} - (1.5 m^{2} + 2.25 m^{2})$
=16.25 $m^{2}$

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A wall of room is of dimension 5m×4m. It has a window of dimension 1.5m×1m and door of dimension 2.25m×1m. Find the area of the wall which is to be painted.

The correct option is B 16.25 Area of wall =5m×4m=20m2 Window of dimension = 1.5m×1m=1.5m2 Door of dimension = 2.25m×1m=2.25m2 Required area of the wall, which to be painted = Area of wall – (Area of window + Area of door) =20m2−(1.5m2+2.25m2) =16.25 m2

A wall of room is of dimension $5 m \times 4 m$ . It has a window of dimension $1.5 m \times 1 m$ and door of dimension $2.25 m \times 1 m$ . Find the area of the wall which is to be painted.