Question

find the cost of wall painting of four wall of a hall if length breadth and height of wall is 1om 8m and 5m and rate of painting is Rs 3oo/m square

Answer 1

Answer:

54000 rupees

Step-by-step explanation:

Length of hall = 10 m

Breadth of hall = 8 m

Height of hall = 5 m

In the sum, four walls refers to the area of the cuboid (room) without the top (ceiling) and bottom (floor) faces.

For x, y, z refer to picture attached

Area of four walls = 2 x ($x$ x $z$) + 2 x ($y$ x $z$) = 2 x (10 m x 5 m) + 2 x (8 m x 5 m) = 2 x 50 m + 2 x 40 m = 100 m + 80 m = 180 m

Cost of painting / m$^2$ = 180 m x 300 = 54000 rupees

Answer 2

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