What would be the area of a circle whose diameter is 30.8 cms? ?->(Show Answer!)

1. What would be the area of a circle whose diameter is 30.8 cms?

Write Comment

Comments

By: anil on 05 May 2019 01.19 am

Let the radius and diameter of the circle be $$r$$ and $$D$$ respectively.
$$D=frac{r}{2} = frac{30.8}{2} =15.4 cm $$
Area of a circle = $$pi r^{2}$$
$$=frac{22 imes15.4 imes15.4}{7}$$
$$ =745.36 sq. cms$$

Tags

Show Similar Question And Answers

QA->If the diameter of a circle is doubled, its area is increased by …… times.....

QA->Whose pen name is known as ‘Just as I would not like to be a slave, so I would not like to be a master’ ?....

QA->If the perimeter of circle is 50 cm, its area will be :....

QA->Which documentaries have been recently nominated for the prestigious 5th CMS VATAVARAN, environment and wildlife film festival, held at the India Habitat Centre, New Delhi?....

QA->cms....

MCQ-> Read the following passage carefully and answer the questions given below it. Certain words are given in bold to help you answer some of the questions.At the heart of what makes India a better regime than China is a healthy respect for the civil rights and liberties of its citizens. There are checks and balances in our government. But India’s new surveillance programme, the Central Monitoring system (CMS), resembles a dystopian society akin to George Orwell’s 1984.According to several news reports, the CMS gives the government, Indian security agencies and income tax (IT) officials the authority to listen to, and tape phone conversions, read emails and text messages, monitor Posts on Facebook, Twitter or Linkedin and track searches on Google of selected targets, without oversight by the courts or parliament. To call it sweeping is an understatement.Typically, Indian Security agencies need a court order for surveillance, or depend on Internet/telephone service providers for data, provided they supply a warrant. CMS allows the government to bypass the court. Milind Deora, India’s Minister of State for Information Technology says the new system will actually improve citizens’ privacy because telecommunication agencies would no longer be directly involved in the surveillance; only government officials would have these details – missing the point that in a democracy, there has to be freedom from government surveillance. This is hardly comforting in a nation riddled with governmental corruption.India does not have a privacy law. CMS will operate under the Indian Telegraph Act (ITA). The ITA is a relic of the British Raj from 1885, and gives the government the freedom to monitor private conversations. News reports quote anonymous telecommunications ministry officials as saying that CMS has been introduced for security purposes, and “this is to protect you and your country”.That is irrational. For one, there are no ‘security purposes’ that prevent the government from having a rational debate on this programme and getting approval from our elected representatives before authorizing such wide-reaching surveillance. If the government is worried that a public debate in a paralysed parliament would half the programme’s progress, then it can convene a committee of individuals or an individual body such as CAG to oversee the programme. It can seek judicial approval from the Supreme Court, and have a judge sign off on surveillance requests without making these requests public.As of now, the top bureaucrat in the interior ministry and his/her state level deputies will have the power to approve surveillance requests. Even the recently revealed US surveillance Programme, had ‘behind the doors’ bipartisan surveillance approval. Furthermore, US investigation agencies such as the CIA and NSA are not the ruling party’s marionettes; in India, that the CBI is an arm of the government is a fait accompli. Even the Supreme Court recently lambasted the CBI and asked it to guarantee its independence from government influences after it was proved that it shared unreleased investigation reports with the government.There is no guarantee that this top bureaucrat will be judicious or not use this as a tool to pursue political and personal vendettas against opposition parties or open critics of the government. Security purposes hardly justify monitoring an individual’s social media usage. No terrorist announces plans to bomb a building on Facebook. Neither do Maoists espouse Twitter as their preferred form of communication.Presumably, security purposes could be defined as the government’s need to intercept terrorist plans. How does giving the IT department the same sweeping surveillance powers justify security purposes? The IT office already has expansive powers to conduct investigations, summon individuals or company executives, and raid premises to catch tax evaders. In a world where most financial details are discussed and transferred online, allowing the IT departments to snoop on these without any reasonable cause is akin to airport authorities strip searching everyone who boards a flight.What happened on 26/11 or what happens regularly in Naxal – affected areas is extremely sad and should ideally, never take place again. But targeting terrorists means targeting people who show such inclinations, or those who arouse suspicions, either by their travels or heir associations with militant or extremist groups. And in a country where a teenager has been arrested for posting an innocent comment questioning the need for a bandh on the death of a political leader, gives us reason to believe that this law is most likely to be misused, if not abused. Select the word which is MOST OPPOSITE in meaning to the word printed in bold, as used in the passage. AKIN....

MCQ->The area of a circle is proportional to the square of its radius. A small circle of radius 3 cm is drawn within a larger circle of radius 5 cm. Find the ratio of the areaof the annular zone to the area of the larger circle. (Area of the annular zone is the difference between the area of the larger circle and that of the smaller circle). ....

MCQ->Two adjacent sides of a parallelogram are 21 cms and 20 cms. The diagonal joining the end points of these two sides is 29 cms. The area of the parallelogram (in sq.cms) is....

MCQ-> Each of the questions below consists of a question and two statements numbered I and II are given below it. You have to decide whether the data provided in the statements are sufficient to answer the question. Read both the statements and :Give answer a: If the data in Statement I alone are sufficient to answer the question, while the data in Statement II alone are not sufficient to answer the question. Give answer b: If the data in Statement II alone are sufficient to answer the question, while the data in Statement I alone are not sufficient to answer the question. Give answer c: If the data in Statement I alone or in Statement II alone are sufficient to answer the question. Give answer d: If the data in both the Statements I and II are not sufficient to answer the question. Give answer e: If the data in both the Statements I and II together are necessary to answer the question.What is the area of the circle? I. Perimeter of the circle is 88 cms. II. Diameter of the circle is 28 cms.....

MCQ->What is the area of the circle ? I.perimeter of the circle is 88 cms II.diameter of the circle is 28 cms....