Subject
Bank Exam
Topic
Trust Bank Ltd. - Management Trainee Officer - 2016
In the figure below, AB is a diameter of the circle with center O and ABCD is a square. What is the area of the shaded region in terms of r ?
In the figure below, AB is a diameter of the circle with center O and ABCD is a square. What is the area of the shaded region in terms of r ?
ক)
\(\pi \) (r2- 4)খ)
\(\pi \) (4 - r)গ)
r2(\(\pi \) - 4)ঘ)
r2\((4 - \frac{\pi }{2})\)ঙ)
r2\((2 - \frac{\pi }{2})\)Explanation
Solution: অনুবাদঃ চিত্রে দেয়া আছে যে, একটি বৃত্ত যার কেন্দ্র হচ্ছে O, তার ব্যাস হলো AB এবং ABCD একটি বর্গ । r এর সাপেক্ষে ছায়াকৃত অংশের ক্ষেত্রফল কত ? পাঠক চিত্রে, বৃত্তের ব্যাসার্ধ হলো r অর্ধবৃত্তের বৃত্তের ক্ষেত্রফল = আবার, এই ক্ষেত্রে বৃত্তের ব্যাসই হলো বর্গের একবাহু । তাই বৃত্তের ব্যাসার্ধ r, তাই বৃত্তের ব্যাস = বর্গের একবাহু = 2r অতএব, বর্গের ক্ষেত্রফল = (2r) 2 = 4r 2 r এর সাপেক্ষে Shaded অঞ্চলের ক্ষেত্রফল হবে = বর্গ একক ।Related questions
The figure below shows a cylinder with radius 2 and height 5. If points A and B lie on the circumference of the top and bottom of the cylinder, respectively, what is the greatest possible straight line distance between A and B ?Look at this series: 7, 10, 8, 11, 9, 12 .......... What number should come next ?In the figure below, the angle POQ is 90 degrees. What is the perimeter of the triangle OPQ ?HarvestMadhuri has cats, fish, and frogs for pets. The number of frog she has 1 more than the number of cats and the number of fish is 3 times the number of frogs. Of the following. which could be the total number of these pets ?MonopolyA complete cycle of a traffic light takes 80 seconds. During each cycle, the light is green for 40 seconds. Amber for 10 seconds and red for 30 seconds. when a randomly chosen car arrives at the traffic light, what is the probability that the light willnotbe red ?Applying for Seasonal Employment occurs when a person requests to be considered for a job that is dependent on a particular season or time of year. Which situation below is the best example of Applying for Seasonal Employment ?