Question
The perimeter of a floor a room is 36m. What is the area of four walls of the room, if its height is 6m?
Solution
Perimeter = 2(l + b) = 36m and height = 6m Area of 4 walls = 2(l + b) × h = (36 × 6) = 216 m²Â
More Mensuration Questions
- The ratio of the length to breadth of a rectangular playground is 7:5. If the cost of fencing the playground at the rate of Rs. 4 per metre is Rs. 1920, th...
- The area of a square is 144 cm2 which is 120 cm2 less than that of a rectangle. Find the perimeter of the rectangle if the length of the rectangle is 10 cm...
- The mid points of AB and AC of a ∆ABC are X and Y, respectively. If BC + XY = 24 units, then the value of BC − XY is:
- A solid metal sphere of radius 6 cm is melted and recast into solid hemispheres of radius 3 cm. How many such hemispheres are formed?
- Length and breadth of a rectangular field is (x + 7) cm and (x – 6) cm, respectively. If the cost of ploughing the field at a rate of Rs. 6 per cm² is Rs. ...
- The perimeter of a rhombus is 40 m and its height is 6 m. Its area is:
- If the length and breadth of a rectangle are in the ratio 5: 2 and its perimeter is 28 cm, then the area of the rectangle (in cm²) is :  Â
- The breadth ‘b’ of a room is twice its height and half of its length. Find the length of the longest diagonal of the room
- Perimeter of a square field is 100 meters and the area of a rectangular field is 40% more than that of the square field. Find the area (in m2) of a rectang...
- If perpendicular and base of a right-angle triangle are 6 cm and 8 cm respectively, then find the length of the shortest median of triangle.