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So the area of piece A = ________ square cm

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प्रश्न

So the area of piece A = ________ square cm

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उत्तर

So the area of piece A = 30 square cm

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अध्याय 11: Area and its Boundary - Area and its Boundary [पृष्ठ १४७]

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एनसीईआरटी Mathematics Math - Magic [English] Class 5
अध्याय 11 Area and its Boundary
Area and its Boundary | Q 1.3 | पृष्ठ १४७

संबंधित प्रश्न

Let ABCD be a parallelogram of area 124 cm2. If E and F are the mid-points of sides AB and
CD respectively, then find the area of parallelogram AEFD.


If ABCD is a parallelogram, then prove that
𝑎𝑟 (Δ𝐴𝐵𝐷) = 𝑎𝑟 (Δ𝐵𝐶𝐷) = 𝑎𝑟 (Δ𝐴𝐵𝐶) = 𝑎𝑟 (Δ𝐴𝐶𝐷) = `1/2` 𝑎𝑟 (||𝑔𝑚 𝐴𝐵𝐶𝐷) .


If ABC and BDE are two equilateral triangles such that D is the mid-point of BC, then find ar (ΔABC) : ar (ΔBDE).


ABC is a triangle in which D is the mid-point of BCand F are mid-points of DC and AErespectively. IF area of ΔABC is 16 cm2, find the area of ΔDEF.


A triangle and a parallelogram are on the same base and between the same parallels. The ratio of the areas of triangle and parallelogram is


The median of a triangle divides it into two ______.


In a ΔABCDEF are the mid-points of sides BCCA and AB respectively. If ar (ΔABC) = 16cm2, then ar (trapezium FBCE) =


In the given figure, ABCD is a parallelogram. If AB = 12 cm, AE = 7.5 cm, CF = 15 cm, then AD =


Diagonal AC and BD of trapezium ABCD, in which AB || DC, intersect each other at O. The triangle which is equal in area of ΔAOD is


The medians of a triangle ABC intersect each other at point G. If one of its medians is AD,
prove that:
(i) Area ( ΔABD ) = 3 x Area ( ΔBGD )
(ii) Area ( ΔACD ) = 3 x Area ( ΔCGD )
(iii) Area ( ΔBGC ) = `1/3` x Area ( ΔABC ).


The diagonal of a rectangular board is 1 m and its length is 96 cm. Find the area of the board.


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 square, whose side is: 7.2 cm.


What will happen to the area of a rectangle, if its length and breadth both are trebled?


The side of a square field is 16 m. What will be increase in its area, if each of its sides is doubled?


The table given below contains some measures of the rectangle. Find the unknown values.

Length Breadth Perimeter Area
13 cm ? 54 cm ?

Which has the bigger area - one of your footprints or the page of this book?


What is the area of the rectangle? ________ square cm


How many tiles like the triangle given here will fit in the white design?

Area of design = ________ square cm


If each square on this page is equal to 1 square meter of land, how much land will each of her children get? ________ square m


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 is its area? Is it more than the first rectangle?

Cheggu’s wife asked him to make a circle with the wire. She knew it had an area of 800 square meters.

  • Why did Cheggu not choose a rectangle? Explain.

An engineer who plans to build a compound wall on all sides of a house must find the area of the compound.


Is the area of both your footprints the same?


Find the area of the following figure by counting squares:


Find the area of the following figure by counting squares:


Find the area of the following figure by counting squares:


When using a square centimeter sheet for measurement, the area of one entire square equals:


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