Advertisements
Advertisements
प्रश्न
In Q. No 1, if AD = 6 cm, CF = 10 cm, and AE = 8cm, find AB.
Advertisements
उत्तर
We know that,
Area of parallelogram ABCD = AD × CF ……(1)
Again area of parallelogram ABCD = DC × AE ……(2)
Compare equation (1) and equation (2)
AD × CF = DC × AE
⇒ 6 × 10 = D × B
⇒ ` D = 60 /8 = 7. 5cm`
∴ AB = DC = 7 . 5cm [ ∴ Opposite sides of a parallelogram are equal ]
APPEARS IN
संबंधित प्रश्न
The perimeter of a triangle ABC is 37 cm and the ratio between the lengths of its altitudes be 6: 5: 4. Find the lengths of its sides.
Let the sides be x cm, y cm, and (37 - x - y) cm. Also, let the lengths of altitudes be 6a cm, 5a cm, and 4a cm.
The sides of a rectangular park are in the ratio 4 : 3. If its area is 1728 m2, find
(i) its perimeter
(ii) cost of fencing it at the rate of ₹40 per meter.
Find the area of a rectangle whose length = 24 cm breadth =180 mm
What is the area of the rectangle? ________ square cm
Nasreena is a farmer who wants to divide her land equally among her three children — Chumki, Jhumri, and Imran. She wants to divide the land so that each piece of land has one tree. Her land looks like this.
- Can you divide the land equally? Show how you will divide it. Remember each person has to get a tree. Colour each person’s piece of land differently.
The King was very happy with carpenters Cheggu and Anar. They had made a very big and beautiful bed for him. So as gifts the king wanted to give some land to Cheggu, and some gold to Anar. Cheggu was happy. He took 100 meters of wire and tried to make different rectangles.
He made a 10 m × 40 m rectangle. Its area was 400 square meters. So he next made a 30 m × 20 m rectangle.
- What other rectangles can he make with 100 meters of wire? Discuss which of these rectangles will have the biggest area.
Each line gives a story. You have to choose the question which makes the best story problem. The first one is already marked.
- The cost of one book is Rs 47. Sonu buys 23 books.
a) How much money does she have? b) How much money does she pay for the books? c) What is the cost of 47 books?
Area of a rectangle with length 5 cm and breadth 3 cm is ______.
Find the area of the following figure by counting squares:
Find the area of the following figure by counting squares:
