Advertisements
Advertisements
Question
The table given below contains some measures of the rectangle. Find the unknown values.
| Length | Breadth | Perimeter | Area |
| 5 cm | 8 cm | ? | ? |
Advertisements
Solution
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
RELATED QUESTIONS
Find the length and perimeter of a rectangle, whose area = 120 cm2 and breadth = 8 cm
Find the perimeter of a rectangle whose:
length = 40 cm and breadth = 35 cm
Find the perimeter of a regular pentagon of side 8.2 cm.
Each side of a square tile is 60 cm. How many tiles will be required to cover the floor of a hall with length = 50 m and breadth = 36 m.
The cost of flooring a hall of ₹64 per square meter is ₹2,048. If the breadth of the hall is 5m, find:
(i) its length.
(ii) its perimeter.
(iii) cost of fixing a border of very small width along its boundary at the rate of ₹60 per square meter.
A game requires its players to run around a square playground. Each side of the playground is 20 m long. One player took 5 rounds around the playground. How many metres did he run altogether?
If every side of a rectangle is doubled, then its area becomes _______ times
Rahim and Peter go for a morning walk, Rahim walks around a square path of side 50 m and Peter walks around a rectangular path with length 40 m and breadth 30 m. If both of them walk 2 rounds each, who covers more distance and by how much?
Rectangle MNOP is made up of four congruent rectangles (see figure). If the area of one of the rectangles is 8 m2 and breadth is 2 m, then find the perimeter of MNOP.
What is the correct formula for the perimeter of a rectangle with length (l) and breadth (b)?
