Advertisements
Advertisements
प्रश्न
Find the length and perimeter of a rectangle, whose area = 120 cm2 and breadth = 8 cm
Advertisements
उत्तर
area of rectangle = 120 cm2
breadth, b = 8 cm
Area = l x b
l x 8 = 120
l = `120/8` = 15 cm
Perimeter = 2 (l+b) = 2(15+8) = 2 x 23 = 46 cm
Length = 15 cm; Perimeter = 46 cm
APPEARS IN
संबंधित प्रश्न
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?
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?
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?
Find the perimeter of a rectangle, whose sides are 12 cm and 8 cm
Length of a rectangle is three times its breadth. Perimeter of the rectangle is 40 cm. Find its length and width.
Length of a rectangular field is 250 m and width is 150 m. Anuradha runs around this field 3 times. How far did she run? How many times she should run around the field to cover a distance of 4 km?
A rectangular piece of land measures 0.7 km by 0.5 km. Each side is to be fenced with 4 rows of wires. What is the length of the wire needed?
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.
A large square is made by arranging a small square surrounded by four congruent rectangles as shown in the following figure. If the perimeter of each of the rectangle is 16 cm, find the area of the large square.
