Advertisements
Advertisements
प्रश्न
Look at the figures on the sheet of graph paper. Measure their sides with the help of the lines on the graph paper. Write the perimeter of each in the right box.
- Perimeter of rectangle ABCD = ______ cm.
- Perimeter of rectangle EFGH = ______ cm.
- Perimeter of square PQRS = ______ cm.
- Perimeter of rectangle STUV = ______ cm.
उत्तर
1. Perimeter of a rectangle ABCD
= 2 × length + 2 × breadth
= 2 × 3.5 + 2 × 2.5
= 7 + 5
= 12 cm
2. Perimeter of a rectangle EFGH
= 2 × length + 2 × breadth
= 2 × 3.8 + 2 × 1.3
= 7.6 + 2.6
= 10.2 cm
3. The perimeter of a Square PQRS
= 4 × length of side
= 4 × 2.4
= 9.6 cm
4. The perimeter of a rectangle STUV
= 2 × length + 2 × breadth
= 2 × 3 + 2 × 2
= 6 + 4
= 10 cm
संबंधित प्रश्न
Find the perimeter of a rectangle whose:
length = 40 cm and breadth = 35 cm
A rectangular field has length = 160m and breadth = 120 m. Find:
(i) the perimeter of the field.
(ii) the length of fence required to enclose the field.
(iii) the cost of fencing the field at the rate of? 80 per meter.
A school playground is rectangular in shape with length = 120 m and breadth = 90 m. Some school boys run along the boundary of the play-ground and make 15 complete rounds in 45 minutes. How much distance they run during this period.
A rectangle with length = 18 cm and breadth = 12 cm has same perimeter as that of a regular pentagon. Find the side of the pentagon.
Each side of a square is 45 cm and a rectangle has length 50 cm. If the perimeters of both (square and rectangle) are same, find the breadth of the rectangle.
Find the perimeter of a rectangle whose area = 2600 m² and breadth = 50 m.
If we take 4 rounds around a field that is 160 m long and 90 m wide, what is the distance we walk in kilometers?
The table given below contains some measures of the rectangle. Find the unknown values.
| Length | Breadth | Perimeter | Area |
| 5 cm | 8 cm | ? | ? |
On a centimetre squared paper, make as many rectangles as you can, such that the area of the rectangle is 16 sq cm (consider only natural number lengths).
- Which rectangle has the greatest perimeter?
- Which rectangle has the least perimeter?
- If you take a rectangle of an area of 24 sq cm, what will be your answers?
In the given figure, perimeter of (ii) is greater than that of (i), but its area is smaller than that of (i).
 |
 |
| (i) | (ii) |
