Advertisements
Advertisements
Question
How much wire will be needed to make a rectangle 7 cm long and 4 cm wide?
Advertisements
Solution
Perimeter of a rectangle
= 2 x length + 2 x breadth
= 2 x 7 + 2 x 4
= 14 + 8
= 22 cm
∴ 22 cm wire will be needed to make a rectangle.
RELATED QUESTIONS
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.
Find the perimeter of a rectangle whose:
length = 10 m and breadth = 8 m
Each side of a square field is 70 cm. How much distance will a boy walk in order to make?
(i) one complete round of this field?
(ii) 8 complete rounds of this field?
The length of a rectangle is twice of its breadth. If its perimeter is 60 cm, find its length.
Find the perimeter of an isosceles triangle with each equal side = 13 cm and the third side = 10 cm.
If A denotes area of a rectangle, l represents its length and b represents its breadth, find:
b, if A = 88 m² and l = 8m
The perimeter of a square is 60 m, find:
(i) its each side its area
(ii) its new area obtained on increasing
(iii) each of its sides by 2 m.
The length of a rectangular plot of land is 50 m and its width is 30 m. A triple fence has to be put along its edges. If the wire costs 60 rupees per metre, what will be the total cost of the wire needed for the fence?
Find the perimeter of the following figure
In the following figure, perimeter of (ii) is greater than that of (i), but its area is smaller than that of (i).
 |
 |
| (i) | (ii) |
