Advertisements
Advertisements
प्रश्न
The perimeter of a rectangle becomes ______ times its original perimeter, if its length and breadth are doubled.
Advertisements
उत्तर
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
संबंधित प्रश्न
A rectangular piece is 20 m long and 15 m wide. From its four corners, quadrants of radii 3.5 m have been cut. Find the area of the remaining part.
Find the area of Fig. 20.25, in square cm, correct to one place of decimal. (Take π = 22/7)
The diameter of a wheel of a bus is 90 cm which makes 315 revolutions per minute. Determine its speed in kilometres per hour. [Use π = 22/7]
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 area of a parallelogram is 60 cm2 and one of its altitudes is 5 cm. The length of its corresponding side is ______.
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.)
Which branch of mathematics deals with the measurement of length, area, volume, and surface area of geometric figures?
What defines a closed figure?
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:
