Railways Exam  >  Railways Questions  >   Area of a circle is 706.5 cm2 and its radius... Start Learning for Free
Area of a circle is 706.5 cm2 and its radius is increased by a certain amount so that its circumference is increased by 31.4 cm. What is the new area of the circle? (Use π = 3.14)
  • a)
    1256 cm2
  • b)
    1000 cm2
  • c)
    1600 cm2
  • d)
    Other than above
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Area of a circle is 706.5 cm2 and its radius is increased by a certai...
Let the original radius of the circle be R
Area of circle = πR2
R2 =706.5/3.14 = 225
R = 15 cm.
Let radius is increased by S cm.
Increase in circumference = (2π x (15 +S)) - (2π x15)
= 2πS
2πS = 31.4
S = 5 cm
New area of circle = π x (20)2 = 3.14 x 400 = 1256 cm2.
View all questions of this test
Explore Courses for Railways exam
Area of a circle is 706.5 cm2 and its radius is increased by a certain amount so that its circumference is increased by 31.4 cm. What is the new area of the circle? (Use π = 3.14)a)1256 cm2b)1000 cm2c)1600 cm2d)Other than aboveCorrect answer is option 'A'. Can you explain this answer?
Question Description
Area of a circle is 706.5 cm2 and its radius is increased by a certain amount so that its circumference is increased by 31.4 cm. What is the new area of the circle? (Use π = 3.14)a)1256 cm2b)1000 cm2c)1600 cm2d)Other than aboveCorrect answer is option 'A'. Can you explain this answer? for Railways 2024 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about Area of a circle is 706.5 cm2 and its radius is increased by a certain amount so that its circumference is increased by 31.4 cm. What is the new area of the circle? (Use π = 3.14)a)1256 cm2b)1000 cm2c)1600 cm2d)Other than aboveCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Railways 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Area of a circle is 706.5 cm2 and its radius is increased by a certain amount so that its circumference is increased by 31.4 cm. What is the new area of the circle? (Use π = 3.14)a)1256 cm2b)1000 cm2c)1600 cm2d)Other than aboveCorrect answer is option 'A'. Can you explain this answer?.
Solutions for Area of a circle is 706.5 cm2 and its radius is increased by a certain amount so that its circumference is increased by 31.4 cm. What is the new area of the circle? (Use π = 3.14)a)1256 cm2b)1000 cm2c)1600 cm2d)Other than aboveCorrect answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Railways. Download more important topics, notes, lectures and mock test series for Railways Exam by signing up for free.
Here you can find the meaning of Area of a circle is 706.5 cm2 and its radius is increased by a certain amount so that its circumference is increased by 31.4 cm. What is the new area of the circle? (Use π = 3.14)a)1256 cm2b)1000 cm2c)1600 cm2d)Other than aboveCorrect answer is option 'A'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Area of a circle is 706.5 cm2 and its radius is increased by a certain amount so that its circumference is increased by 31.4 cm. What is the new area of the circle? (Use π = 3.14)a)1256 cm2b)1000 cm2c)1600 cm2d)Other than aboveCorrect answer is option 'A'. Can you explain this answer?, a detailed solution for Area of a circle is 706.5 cm2 and its radius is increased by a certain amount so that its circumference is increased by 31.4 cm. What is the new area of the circle? (Use π = 3.14)a)1256 cm2b)1000 cm2c)1600 cm2d)Other than aboveCorrect answer is option 'A'. Can you explain this answer? has been provided alongside types of Area of a circle is 706.5 cm2 and its radius is increased by a certain amount so that its circumference is increased by 31.4 cm. What is the new area of the circle? (Use π = 3.14)a)1256 cm2b)1000 cm2c)1600 cm2d)Other than aboveCorrect answer is option 'A'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Area of a circle is 706.5 cm2 and its radius is increased by a certain amount so that its circumference is increased by 31.4 cm. What is the new area of the circle? (Use π = 3.14)a)1256 cm2b)1000 cm2c)1600 cm2d)Other than aboveCorrect answer is option 'A'. Can you explain this answer? tests, examples and also practice Railways tests.
Explore Courses for Railways exam

Top Courses for Railways

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev