Lateral surface Area of cuboid
The length, breadth and height of a room are 5 m, 4 m and 3 m respectively. Find the cost of white washing the walls of the room and the ceiling at the rate of Rs. 7.50 m2.
An open box is made of wood 3 cm thick. Its external length, breadth and height are 1.48 m, 1.16 m and 8.3 dm. Find the cost of painting the inner surface of Rs 50 per sq. metre.
The length, breadth and height of a cuboid are 15 m, 6 m, and 5 dm respectively. The lateral surface area of the cuboid is
(a) 45 cm2 (b) 21 cm2 (c) 201 cm2 (d) 90 cm2
The length and breadth of a hall are in the ratio 4:3 and its height is 5.5 m . The cost of decorating its walls (including doors and windows) at Rs.6.60 per square metre is Rs.5082. Find the length and breadth of the room.
The length of a room is 1.5 times of its breadth. The cost of carpeting the at Rs. 5 per sq. m is Rs. 270 and the cost of papering the four walls at Rs. 10 per m2 is Rs. 1720. If a door and 2 windows occupy 8 sq. m, find the height of the room.
The surface area of a cuboid is 1372 cm2. If its dimensions are in the ratio 4: 2:1, then its length(in cm) is:
The cost of preparing the walls of a room 12 m long at the rate of Rs 1.35 per square metre is Rs 340.20 and the cost of matting the floor at 85 paise per square metre is Rs 91.80. Find the height of the room.
The actual length of a painting was 2 m. What is the length of the photograph if the scale used is 1 mm:20 cm.
The length of a hall is 18 m and the width 12 m. The sum of the areas of the floor and the flat roof is equal to the sum of the areas of the four walls. Find the height of the hall.
How many cubes of side 2 cm can be fit into cuboid box having length, breadth and height of 8cm, 12 cm and 10 cm respectively? [3 MARKS]
- 42 cm2
- 52 cm2
- 32 cm2
- 92 cm2