Advertisements
Advertisements
प्रश्न
The table given below contains some measures of the rectangle. Find the unknown values.
| Length | Breadth | Perimeter | Area |
| 5 cm | 8 cm | ? | ? |
Advertisements
उत्तर
Area of the rectangle = (length × breadth) sq.unit
Perimeter of a rectangle = 2(l + b) units
l = 5 cm
b = 8 cm
∴ P = 2(l + b) cm
= 2(5 + 8) cm
= 2 × 13 cm
P = 26 cm
Area = (l × b) cm2
= (5 × 8) cm2
A = 40 cm2
Completing the unknown values in the table.
| Length | Breadth | Perimeter | Area |
| 5 cm | 8 cm | 26 cm | 40 cm2 |
APPEARS IN
संबंधित प्रश्न
The perimeter of a rectangle is 46 m and its length is 15 m. Find its :
(i) breadth
(ii) area
(iii) diagonal.
The diagonal of a rectangle is 34 cm. If its breadth is 16 cm; find its :
(i) length
(ii) area
The area of a small rectangular plot is 84 m2. If the difference between its length and the breadth is 5 m; find its perimeter.
The length and the breadth of a rectangular field are in the ratio 5: 4 and its area is 3380 m2. Find the cost of fencing it at the rate of ₹75 per m.
Find the perimeter of a regular hexagon of side 6.5 cm.
Each rectangular tile is 40 cm long and 30 cm wide. How many tiles will be required to cover the floor of a room with length = 4.8 m and breadth = 2.4 m.
The perimeter of a square plot = 360 m. Find:
- its area.
- cost of fencing its boundary at the rate of ₹ 40 per meter.
- cost of levelling the plot at ₹60 per square meter.
Length and breadth of a rectangular sheet of paper are 20 cm and 10 cm, respectively. A rectangular piece is cut from the sheet as shown in the following figure. Which of the following statements is correct for the remaining sheet?
The perimeter of a rectangle is 60 m. What is the sum of its length and breadth?
Why is the perimeter of a rectangle calculated as 2 × (length + breadth)?
