Advertisements
Advertisements
प्रश्न
Take a thick paper sheet of length 14 cm and width 9 cm. You can also use an old postcard.
- What is its area? What is its perimeter?
उत्तर
Area of rectangle = l × b
= 14 × 9
= 126 square cm.
Perimeter = 2(l + b)
= 2(14 + 9)
= 2 × 23
= 46 cm.
APPEARS IN
संबंधित प्रश्न
The diagonal of a square is `12sqrt2` cm. Find its perimeter.
If P = perimeter of a rectangle, l= its length and b = its breadth find P, if l = 38 cm and b = 27 cm
If P = perimeter of a rectangle, l = its length and b = its breadth; find l, if P = 96 m and b = 28 m.
The cost of fencing a square field at the rate of ₹ 75 per meter is ₹ 67,500. Find the perimeter and the side of the square field.
The diameter of a circle is 42 cm, find its perimeter. If the perimeter of the circle is doubled, what will be the radius of the new circle? (Take π = `22/7`)
The perimeters of two squares are in the ratio 8:15, find the ratio between the lengths of their sides.
If P denotes perimeter of a rectangle, l denotes its length and b denotes its breadth, find:
P, if l = 2 m and b = 75cm
A wire is bent in the form of an equilateral triangle of each side 20 cm. If the same wire is bent in the form of a square, find the side of the square.
The area of a square is 36 cm2. How long are its sides?
What is the perimeter of the rectangle? ________ cm
A square carrom board has a perimeter of 320 cm. How much is its area?
Sanya, Aarushi, Manav and Kabir made greeting cards. Complete the table for their cards:
| Whose card | Length | Width | Perimeter | Area |
| Sanya | 10 cm | 8 cm | ||
| Manav | 11 cm | 44 cm | ||
| Aarushi | 8 cm | 80 square cm | ||
| Kabir | 40 cm | 100 square cm |
Chumki, Jhumri, and Imran need wire to make a fence.
- Who will need the longest wire for fencing?
Can you make a rectangle with a still longer boundary? I made a rectangle 1 cm wide and 80000 m long. Imagine how long that boundary will be!!! With that much gold wire I can become a king!
What is the length of outer boundary of the park shown in the given figure? What will be the total cost of fencing it at the rate of Rs 20 per metre? There is a rectangular flower bed in the center of the park. Find the cost of manuring the flower bed at the rate of Rs 50 per square metre.
Total cost of fencing the park shown in the given figure is Rs 55000. Find the cost of fencing per metre.
Find the perimeter of the following figure:
Find the perimeter of the following figure:
Find the perimeter of the following shape:
A triangle of sides 3 cm, 4 cm and 5 cm.
