CBSE Guess Official Helpline Forum for CBSE Students, Teachers and Parents. | Educational Portals: ICSE | IGNOU | NIOS | IIT JEE | AIPMT | AIEEE | Friends |
IMPORTANT INFORMATION: To participate in this form you need to register as your CBSEGuess.com login info will not work here. Click Here to Register
Maths: area related to circles
2 posts
• Page 1 of 1
Maths: area related to circlesHow to solve the problems of area related to circles.
Re: Maths: area related to circlesThe first exercise deals with
circumference = 2 pi r Area= pi r"2 the following exercise is done by these formulas.....using sectors.... the radius & the angle of the sector is given then area of the sector = A/360 * pi r "2 Length of the arc of the sector= A/360 * 2 pi r In many cases, for example, if asked to find the area of a shaded portion of a circle. First find the total area of the circle and the other inside it(not the shaded region)using these formula,and subtracting ar(circle) by ar(other region).Then you get the area of the given shaded region inside it. Questions are not usually direct as this.
2 posts
• Page 1 of 1
Return to CBSE Class X Helpline Who is onlineUsers browsing this forum: No registered users and 20 guests |