Advertisements
Advertisements
प्रश्न
What is the perimeter of the following figures? What do you infer from the answers?
 (a) |
 (c) |
 (b) |
 (d) |
Advertisements
उत्तर
- Perimeter of the square = 4 × side
= 4 × 25
= 100 cm - Perimeter of rectangle = 2 (40 + 10)
= 2 × 50
= 100 cm - Perimeter of rectangle = 2 (Length + Breadth)
= 2 (30 + 20)
= 2 (50)
= 2 × 50
= 100 cm - Perimeter of triangle = 30 + 30 + 40
= 100 cm
∴ All the figures have the same perimeter.
संबंधित प्रश्न
In each of the following cases, ABCD is a square and PQRS is a rectangle. Find, in each case, the area of the shaded portion.
(All measurements are in metre).
(i)
(ii)
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.
Find the perimeter of an isosceles triangle with each equal side = 13 cm and the third side = 10 cm.
How much wire will be needed to make a rectangle 7 cm long and 4 cm wide?
Each side of a square is 9 m long. Find its perimeter.
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 | ? | ? |
Find the perimeter and the area of the rectangle whose length is 6 m and breadth is 4 m
Length of a rectangular field is 250 m and width is 150 m. Anuradha runs around this field 3 times. How far did she run? How many times she should run around the field to cover a distance of 4 km?
Why is the perimeter of a rectangle calculated as 2 × (length + breadth)?
