Circle related area questions class 9
WebSolution: 2πrh = 154 sq.cm…. (i) 2πr² + 2πrh = 462 sq.cm…. (ii) Question 3- A recent survey found that the age of workers in a factory as follows: If a person is selected at random, then find the probability that the person is: (i) Having age from 30-39 years. (ii) Under 40 years. WebQuestion 9: Find the area of a rhombus of perimeter 60 cm and one of its diagonals is 24 cm. Solution: Let ABCD be the rhombus Length of one diagonal (let AC) = 24 cm. Let the length of sides of rhombus be ‘a’. Perimeter of rhombus = 4a = 60 ⇒ a = 60/4 = 15 cm By the properties of rhombus, diagonals of a rhombus bisect at right angles.
Circle related area questions class 9
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WebSep 21, 2024 · Question 9. If two lines intersects each other then the common point between them is known as point of _________. (a) concurrence (b) intersection (c) vertex (d) contact Answer Question 10. What is a set of points extending infinitely in all directions on the same flat surface called? (a) A line (b) A plane (c) Ray (d) A point Answer … Web1. A circle has a radius of 21 cm. Find its circumference and area. (Use π = 22/7) Solution: We know, Circumference of circle = 2πr = 2 x (22/7) x 21 = 2 x 22 x 3 = 132 cm Area of circle = πr 2 = (22/7) x 21 2 = 22/7 x 21 x 21 = 22 x 3 x …
WebFind the area of a circle with a circumference of 12.56 \blueD{12.56} 1 2. 5 6 start color #11accd, 12, point, 56, end color #11accd units. Your answer should be an integer, like 6 6 6 6 WebAug 8, 2024 · Question 1. If the area of a circle is equal to sum of the areas of two circles of diameters 10 cm and 24 cm, calculate the diameter of the larger circle (in cm). …
WebJun 5, 2015 · Get the CBSE Class 10th Mathematics, Area related to Circles: Important Questions & Preparation Tips. This will help with a precise description of the whole … WebJul 21, 2024 · A circle divides the plane on which it lies into three parts. They are: Inside the circle, which is additionally called the inside of the circle. Point lying in the plane of the circle such that its distance from its …
WebDiameter of a Circle: A line segment passing through the center of a circle, and having its endpoints on the circle, is called the diameter of the circle. Diameter = 2 × radius. Circumference: The circumference of a circle is the distance around a circle. It is the same as the perimeter of other shapes. Chords of Circles:
WebOct 12, 2024 · The topics and sub-topics in NCERT Class 9 Maths Textbook Chapter 10 Circles: Circles. Introduction. Circles And Its Related Terms: A Review. Angle Subtended … Ex 1.4 Class 9 Maths Question 2. Visualise 4.\(\bar { 26 }\) on the number line, upto … cseeiffageroute-mp.frWebMar 30, 2024 · (d) 9 π cm 2 Ans: b Solution Hint Given, Side of square = 8 cm Diameter of a circle = side of square = 8 cm Therefore, Radius of circle = 4 cm Area of circle = π (4) 2 = 16π cm 2 Q 15) The area of the square that can be inscribed in a circle of radius 8 cm is (a) 256 cm 2 (b) 128 cm 2 (c) 642 cm 2 (d) 64 cm 2 Ans: b Solution Hint csee grand sudWebQuestion 9. Two circular pieces of equal radii and maximum area, touching each other are cut out from a rectangular card board of dimensions 14 cm × 7 cm. Find the area of the remaining card board. [Use π = ] (2013D) … dyson\u0027s building supplyWebWhat is the ratio of the area of circle A to the area of circle B? Answers to the Above Questions. 16. 4 pi + 16 square units. 452 square meters. 21 pi square meters. $0.02 per square centimeters. length of fencing is 8 … dyson type star torx screwdriverWebWhat is the value of radius, if the area of circle is 78.54 sq cm? Since, radius = √ (Area/π) Given, area = 78.54 sq.cm and π = 22/7 Therefore, Radius = √ (78.54/ (22/7)) Radius = 5 cm (Approximately) If the circumference of a circle is 100 cms, then find the radius? Radius = Circumference/2π R = 100/2π R = 15.92 cm. csee idf ouest bnpWebJul 30, 2024 · Circumference And Area of Circle Class-9 RS Aggarwal ICSE Maths Goyal Brothers Prakashan. Page 226-230. Question 1: A sheet is 11 cm long and 2 cm wide, Circular pieces ……………………… that … csee high school yonkersWebArea of a sector of circle = (θ/360°)×πr 2 Areas Related to Circles Questions and Solutions Q.1: If the radius of a circle is 4.2 cm, find its area. Solution: Given, Radius of circle = 4.2 cm By the formula, we have; Area of circle = πr 2 A = π (4.2) 2 A = 55.44 cm 2 cseegpac bnpparibas