मराठी

There are two beautiful lakes near a village. People come for boating and picnics in both the lakes. The village Panchayat is worried that with the noise of the boats the birds will stop coming.

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प्रश्न

There are two beautiful lakes near a village. People come for boating and picnics in both the lakes. The village Panchayat is worried that with the noise of the boats the birds will stop coming. The Panchayat wants motorboats in only one lake. The other lake will be saved for the birds to make their nests.

  • What is the length of the boundary of lake B in the drawing?
एका वाक्यात उत्तर
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उत्तर

When we measure the boundary of lake B with the help of a thread, it comes out to be around 25 cm.

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पाठ 11: Area and its Boundary - Area and its Boundary [पृष्ठ १५६]

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एनसीईआरटी Math - Magic [English] Class 5
पाठ 11 Area and its Boundary
Area and its Boundary | Q b) | पृष्ठ १५६

संबंधित प्रश्‍न

When the planet Jupiter is at a distance of 824.7 million kilometres from the Earth, its angular diameter is measured to be 35.72″ of arc. Calculate the diameter of Jupiter


Match the following.

 Column A   Column B
(1) Length  a. kilogram
(2) Mass  b. cubic metre
(3) Area  c. metre
(4) Volume  d. square metre

Exercise


Solve the numerical example.

When the planet Jupiter is at a distance of 824.7 million kilometers from the Earth, its angular diameter is measured to be 35.72'' of arc. Calculate the diameter of Jupiter.


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Measure of your
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An ant of length
less than 1 cm
   
Pencil of length
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A glass 11 cm high with
water up to 5 cm
   
A bangle of perimeter
20 cm
   
A curly hair of length
16 cm
   

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  • Gold wire for B = _________ metres
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    Gold wire for C = __________ metres

But then Anar made an even longer rectangle... See how long!


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There are two beautiful lakes near a village. People come for boating and picnics in both the lakes. The village Panchayat is worried that with the noise of the boats the birds will stop coming. The Panchayat wants motorboats in only one lake. The other lake will be saved for the birds to make their nests.

  • Find the area of lake B on the drawing in square cm. What is its actual area in square km?

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  1. Why do we dissolve oleic acid in alcohol?
  2. What is the role of lycopodium powder?
  3. What would be the volume of oleic acid in each mL of solution prepared?
  4. How will you calculate the volume of n drops of this solution of oleic acid?
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