Advertisements
Advertisements
प्रश्न
The length of a rectangle is three times its breadth. If its perimeter is 64 cm, find the sides of the rectangle
Advertisements
उत्तर
Given perimeter of a rectangle = 64 cm
Also given length is three times its breadth
Let the breadth of the rectangle = b cm
∴ Length = 3 × b cm
Perimeter = 64 m
i.e., 2 × (l + b) = 64 m
2 × (3b + b) = 64 m
2 × 4b = 64 m
4b = `64/2` = 32 m
b = `32/4` = 8 m
l = 3 × b
= 3 × 8
= 24 m
∴ Breadth of the rectangle = 8 m
Length of the rectangle = 24 m
APPEARS IN
संबंधित प्रश्न
Each side of a rectangle is doubled. Find the ratio between :
(i) perimeters of the original rectangle and the resulting rectangle.
(ii) areas of the original rectangle and the resulting rectangle.
A rectangular field is 30 m in length and 22m in width. Two mutually perpendicular roads, each 2.5 m wide, are drawn inside the field so that one road is parallel to the length of the field and the other road is parallel to its width. Calculate the area of the crossroads.
Find the perimeter of a rectangle whose:
length = 8 m and breadth = 80 cm
A school playground is rectangular in shape with length = 120 m and breadth = 90 m. Some school boys run along the boundary of the play-ground and make 15 complete rounds in 45 minutes. How much distance they run during this period.
The length of a rectangle is twice of its breadth. If its perimeter is 60 cm, find its length.
A rectangular piece of paper has area = 24 cm² and length = 5 cm. Find its perimeter.
A farmer has a rectangular field of length and breadth 240 m and 180 m respectively. He wants to fence it with 3 rounds of rope as shown in the figure. What is the total length of rope he must use?
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?
If the length of a rectangle is 14 m and its breadth is 10 m, what is its perimeter?
A hedge boundary needs to be planted around a rectangular lawn of size 72 m × 18 m. If 3 shrubs can be planted in a metre of hedge, how many shrubs will be planted in all?
