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
The length and the breadth of a conference hall are in the ratio 7: 4 and its perimeter is 110 m. Find:
(i) area of the floor of the hall.
(ii) a number of tiles, each a rectangle of size 25 cm x 20 cm, required for the flooring of the hall.
(iii) the cost of the tiles at the rate of ₹ 1,400 per hundred tiles.
Find the perimeter of a rectangle whose area = 2600 m² and breadth = 50 m.
The length of a rectangle is three times its breadth. If the area of the rectangle is 1875 sq. cm, find its perimeter.
Find the cost of fencing a rectangular park of length 250 m and breadth 175 m at the rate of Rs. 12 per metre.
How much wire will be needed to make a rectangle 7 cm long and 4 cm wide?
Four rounds of wire fence have to be put around a field. If the field is 60 m long and 40 m wide, how much wire will be needed?
Length and breadth of a rectangular sheet of paper are 20 cm and 10 cm, respectively. A rectangular piece is cut from the sheet as shown in the following figure. Which of the following statements is correct for the remaining sheet?
Length of a rectangle is three times its breadth. Perimeter of the rectangle is 40 cm. Find its length and width.
There is a rectangular lawn 10 m long and 4 m wide in front of Meena’s house (see the figure). It is fenced along the two smaller sides and one longer side leaving a gap of 1 m for the entrance. Find the length of fencing.
What is the radius of the largest circle that can be cut out of the rectangle measuring 10 cm in length and 8 cm in breadth?
