Advertisements
Advertisements
Question
The perimeter of a rectangle becomes ______ times its original perimeter, if its length and breadth are doubled.
Advertisements
Solution
The perimeter of a rectangle becomes 2 times its original perimeter, if its length and breadth are doubled.
Explanation:
Perimeter of a rectangle with length l and breadth b = 2(l + b)
If the length and the breadth are doubled, then the new perimeter
= 2(2l + 2b)
= 2[2(l + b)]
APPEARS IN
RELATED QUESTIONS
A square and a rectangular field with measurements as given in the figure have the same perimeter. Which field has a larger area?
The shape of a garden is rectangular in the middle and semi circular at the ends as shown in the diagram. Find the area and the perimeter of the garden [Length of rectangle is 20 − (3.5 + 3.5) metres]
Find the area of Fig. 20.25, in square cm, correct to one place of decimal. (Take π = 22/7)
The length and breadth of a rectangular field are in the ratio 7 : 4. If its perimeter is 440 m, find its length and breadth. Also, find the cost of fencing it @ ₹150 per m.
The length and the breadth of a rectangular plot are 135 m and 65 m. Find, its perimeter and the cost of fencing it at the rate of ₹60 per m.
A wire is in the shape of square of side 20 cm. If the wire is bent into a rectangle of length 24 cm, find its breadth.
The length of an aluminium strip is 40 cm. If the lengths in cm are measured in natural numbers, write the measurement of all the possible rectangular frames which can be made out of it. (For example, a rectangular frame with 15 cm length and 5 cm breadth can be made from this strip.)
What is the part of the plane enclosed by a closed figure known as?
The interior of the rectangle, along with its boundary, is called the:
Which of the following is an example of a closed figure?
