Contact Style About

9. The length, breadth and height of a room are 9m, 8m and 7 m respectively. Find the

cost of plastering the four wall

By Josie

9. The length, breadth and height of a room are 9m, 8m and 7 m respectively. Find the

cost of plastering the four walls and ceiling of the room at the rate of ₹ 7 per sq m.​

About the author
Josie

(2) Find the quadratic equation whose roots are the reciprocals of the roots
of x2 + 4x
10 = 0.
what is the meaning

Match The Following :

Column I. Column II

i) 5/3 +⅗. a) – 13/72

ii) 7/24 – 17/36. b) 34/15

2 thoughts on “9. The length, breadth and height of a room are 9m, 8m and 7 m respectively. Find the <br /><br />cost of plastering the four wall”

  2. Given, length of the room (l) = 4.5 m

    Breadth of the room (b) = 3m

    Height of the room (h) = 350 cm = 3.5 m

    And the cost of plastering = Rs. 8perm

    2

    Therefore, the area of the walls = 2h(l+b)

    = 2×3.5×(4.5+3) = 7×(7.5) = 52.2 m

    2

    Area of the ceiling = lb = 4.5×3 = 13.5m

    2

    Area of the room = 52.5+13.5 = 66m

    2

    Hence, the cost of plastering = 66×8 = Rs 528

    Reply

Leave a Comment