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Yogita Ingle 5 years, 11 months ago
Area of shaded region = area of semicircle of diameter BC - {area of quadrant of radius AB /AC - area of ∆ABC }
So, area of semicircle of diameter BC = 1/2 πr²
= 1/2 × 22/7 × 7√2 × 7√2 [ ∵ BC is hypotenuse of right angle ∆ABC , here AB = BC = 14 so, BC = 14√2 = 2 × radius ⇒ radius = 7√2 ]
= 11 × 7 × 2 = 154 cm²
area of quadrant of radius AB/AC = 1/4 πr²
= 1/4 × 22/7 × 14 × 14
= 22 × 7 = 154 cm²
area of ∆ABC = 1/2 height × base
= 1/2 × 14 × 14 = 98 cm²
Now, area of shaded region = 154cm² - { 154cm² - 98cm²} = 98cm²
Hence, area of shaded region = 98 cm²
Posted by Ujjwal Kumar Pathak 5 years, 11 months ago
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Yogita Ingle 5 years, 11 months ago
The volume of hemisphere ={tex} \dfrac{4851}{2} cm^{2}{/tex}
To find, the curved surface area(CSA) of a hemisphere = ?
We know that,
The volume of a hemisphere {tex}=\dfrac{2}{3} \pi r^{3}{/tex}
{tex}⇒\dfrac{2}{3} \times \dfrac{22}{7} r^{3}=\dfrac{4851}{2} cm^{2}{/tex}
{tex}⇒ r^3=(4851\times 7 \times 3)/(2 \times 2 \times 22){/tex}
{tex}⇒ r^3=\dfrac{101871}{88}{/tex}
{tex}⇒ r^3 = 1157.625{/tex}
{tex}⇒ r^3 = \dfrac{1157625}{100}{/tex}
{tex}⇒ r^3 = (\dfrac{105}{10})^{3} =10.5^{2}{/tex}
⇒ r = 10.5 cm
{tex}∴ The curved surface area(CSA) of a hemisphere =2\pi r^{2}{/tex}
{tex}= 2 \times \dfrac{22}{7} \times 10.5 \times 10.5{/tex}
{tex}= 2 \times 22 \times 1.5 \times 10.5cm^{2}{/tex}
{tex}= 44 \times 15.75cm^{2}{/tex}
{tex}=693cm^2{/tex}
Hence, the curved surface area(CSA) of a hemisphere ={tex}693cm^2.{/tex}
Posted by Narayan Pareek 5 years, 11 months ago
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Yogita Ingle 5 years, 11 months ago
The production of a new species from two different species is known as speciation.
Factors responsible for it are:-
1)Natural selection:-Due some natural incidents ,there are genetic variations in new individuals,which led to evolving of new species.
2)Genetic drift:-Sudden alternation in gene frequency is called genetic drift
3)Survival advantage:-Due to camouflage some species enjoy the survival advantage.
4)Migration:-Migration of differnt species also led to evolvement of new species.
Aditya Rajput 5 years, 11 months ago
Posted by Manisha No 5 years, 11 months ago
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Yogita Ingle 5 years, 11 months ago
Democracy can be judged by its outcome because it opens the path of expectations which is one of the criteria for judging any democratic country. Following points can prove the below points:
A democratic government is legitimate government and accountable to the citizens and responsible for the needs and aspirations of the countrymen.
It allows for peaceful changes in the society by the means of elections.
A democratic country looks into the needs and aspirations of every section of society. It is also able to handle social conflicts, divisions and differences.
Democratic governements are based on the rule of law. Government functions on the basis of the rule of law and not on the wishes of the political leaders.
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Yogita Ingle 5 years, 11 months ago
All the keys which are not primary key are called an alternate key. It is a candidate key which is currently not the primary key. However, A table may have single or multiple choices for the primary key.
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Dialysis is primarily used to provide an artificial replacement for lost kidney function (renal replacement therapy) due to renal failure. Dialysis is the artificial process of eliminating waste (diffusion) and unwanted water (ultrafiltration) from the blood. In a healthy man, kidney does this process naturally. Some people may have damaged or failed kidneys which no longer filter toxins from the blood. They do purify their blood through dialysis.
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| hlo | to | all | mt |
| dear | friends | namaskaram | mam |
| mitrani | ? | ? | ? |
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Digestive enzymes such as amylase, lipase, pepsin, trypsin, etc. helps to break the complex food particles into simple ones so that these simple particles can be easily absorbed by the blood and thus transported to all the cells of the body.
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6CO2 + 6H2O + sunlight+ chlorophyll ----------> C6H12O6 + 6O2.
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Yogita Ingle 5 years, 11 months ago
1. In India coal reserves are found in abudance in Peninsular Rock formation.
2. Minerals are universally distributed in various religion of India.
3. The vast Alluvial Plains of North India are almost devoid of Economics mineral.
2Thank You