Home
Class 7
MATHS
A door-frame of dimensions 3m xx 2m fixe...

A door-frame of dimensions `3m xx 2m` fixed on the wall imension `10m xx 10m.` Find the total labour charges for painting the wall if the labour charges for painting `1 m_2` of the wall is `Rs2.50.`

Text Solution

Verified by Experts

Painting of the wall has to be done excluding the area of the door.
Area of the door = L × b
= `3 × 2m² = 6m²`
Area of wall including door = side × side = `10 m ×10 m = 100m²`
...
Promotional Banner

Topper's Solved these Questions

  • PERIMETER AND AREA

    NCERT ENGLISH|Exercise EXERCISE 11.1|8 Videos
  • PERIMETER AND AREA

    NCERT ENGLISH|Exercise EXERCISE 11.4|8 Videos
  • LINES AND ANGLES

    NCERT ENGLISH|Exercise EXERCISE 5.2|6 Videos
  • RATIONAL NUMBERS

    NCERT ENGLISH|Exercise EXERCISE 9.2|4 Videos

Similar Questions

Explore conceptually related problems

A door of dimensions 3mxx2m is on the wall of dimension 10 mxx10 mdot Find the cost of painting the wall if rate of painting is Rs 2. 50 \ p e r\ s qdot\ metredot

A door of length 2 m and breadth 1 m is fitted in a wall. The length of the wall is 4.5 m and the breadth is 3.6 m . Find the cost of white washing the wall, if the rate of white washing the wall is Rs 20 per m^2 .

A door of length 1 m and breadth 0.5 m is on a wall. The length of the wall is 4.5 m and the breadth is 3.6 m as shown in Fig. 5. Find the cost of white washing the wall if the rate of white washing the wall is Rs 20 per m^2 .

A wall is 11 m long and 4 m high. It has a door which is 2 m high and 1.5m wide. Find the cost of painting the wall at the rate of Rs 6 per sq. m.

The wall of a room is 16 long and 6 m high. There is a long rectangular window in the wall measuring 3 m long and I m high. Find the cost of painting the wall at the rate of Rs 15 per sq. m.

The central hall of a school is 80m long and 8m high. It has 10 doors each of size 3m xx1. 6 m and 10 windows each of size 1. 5 m xx 1mdot If the cost of white-washing the walls of the hall at the rate of R s .1.20\ p e r\ m^2 is Rs. 2385.60, find the breadth of the hall.

A room is 9 m long, 8 m broad and 6.5 m high. It has one door of dimensions 2mxx1. 5 m and three windows each of dimensions 1. 5 mxx1mdot Find the cost of white washing the walls at Rs 3.80 per square metre.

Find the cost of painting at the rate of Rs. 5.60 per m^(2) on the hemispherical dome of diameter 10 m.

The floor of a rectangular hall has a perimeter 250 m . If the cost of painting the four walls at the rate of rupes 10 per m^(2) is rupes 15,000 , find the height of the hall.

A ladder 10m long reaches a window 8 m above the ground. Find the distance of the foot of the ladder from base of the wall.