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.

  • A longer boundary around the lake will help more birds to lay their eggs. So which lake should be kept for birds? Which lake should be used for boats?
एका वाक्यात उत्तर
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उत्तर

The boundary around lake A is more than the boundary around lake B. So, lake A should be kept for birds and lake B should be used for boats.

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पाठ 10: Tenths and Hundredths - Tenths and Hundredths [पृष्ठ १५६]

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एनसीईआरटी Math - Magic [English] Class 5
पाठ 10 Tenths and Hundredths
Tenths and Hundredths | Q e) | पृष्ठ १५६

संबंधित प्रश्‍न

Just as precise measurements are necessary in science, it is equally important to be able to make rough estimates of quantities using rudimentary ideas and common observations. Think of ways by which you can estimate the following (where an estimate is difficult to obtain, try to get an upper bound on the quantity):-

the number of air molecules in your classroom.


Write true or false.

Every measurement involves two things – a number and a unit.


Fill in the blank.

In the ............ system, length is measured in centimetres.


While measuring the length of an object using a ruler, the position of your eye should be


Fill in the following chart.

Property Definition Basic Unit Instrument used for measuring
Length      
Mass      
Volume      
Time      

Rulers, measuring tapes and metre scales are used to measure ______


Metre is the unit of ______.


Can you find the diameter of a thin wire of length 2 m using the ruler from your instrument box?


Guess whose tail is the longest. Now measure the tails. How good is your guess?


How many stamps can be placed along its length?


Can you think of how to cut a postcard so that you can pass through it?


Chumki, Jhumri, and Imran need wire to make a fence.

  • How much wire in all will the three need?

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.

  • How many cm is the length of the boundary of lake A in the drawing?(use thread to find out)

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.

  • How many kilometers long is the actual boundary of lake B?

What is the unit of measurements of very small lengths?


The distance of a galaxy is of the order of 1025 m. Calculate the order of magnitude of time taken by light to reach us from the galaxy.


If a planet subtends an angle α at distance D, what formula is used to find the planet's diameter?


What is an Astronomical Unit (AU)?


What is the SI unit of length?


Why is the speed of light used to define the metre?


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