Advertisements
Advertisements
Question
If P denotes perimeter of a rectangle, l denotes its length and b denotes its breadth, find:
b, if P = 3.2m and l = 100 cm
Advertisements
Solution
b, if P = 3.2m and l = 100 cm
`[therefore 100 "cm" = 100/100 "m" = 1 "m"]`
Breadth, (b) = `"P"/2 - "l"`
`= 3.2/2 "m" - "1m"`
= 1.6 m - 1 m = 0.6
APPEARS IN
RELATED QUESTIONS
The length of a rectangular field is 30 m and its diagonal is 34 m. Find the breadth of the field and its perimeter.
If a square of side 1 cm is cut out of the corner of a larger square with side 3 cm (see the figure), what will be the perimeter of the remaining shape?
The table given below contains some measures of the rectangle. Find the unknown values.
| Length | Breadth | Perimeter | Area |
| 10 m | ? | ? | 120 sq.m |
Match the following:
| Shapes | Perimeter |
(A)  |
(i) 10 |
(B)  |
(ii) 18 |
(C)  |
(iii) 20 |
(D)  |
(iv) 25 |
A rectangle and a square have the same perimeter (Figure).
- The area of the rectangle is ______.
- The area of the square is ______.
Perimeter of a regular octagon of side 6 cm is 36 cm.
A farmer who wants to fence his field, must find the perimeter of the field.
What is the length of outer boundary of the park shown in the following figure? What will be the total cost of fencing it at the rate of Rs 20 per metre? There is a rectangular flower bed in the center of the park. Find the cost of manuring the flower bed at the rate of Rs 50 per square metre.
Total cost of fencing the park shown in the following figure is Rs 55000. Find the cost of fencing per metre.
The perimeter of the figure ABCDEFGHIJ is ______.
