plz mention the role of pi in plane and solid geometry
2007-01-01 20:16:53 · 4 answers · asked by harry potter 1 in Science & Mathematics ➔ Mathematics
In plane (2-D) geometry, pi (approximately 22/7, but more accurately an irrational number that begins 3.1415926535897932...) is used to compute the circumference of a circle (given its radius), or the area of a circle.
In solid (3-D) geometry, pi is used to figure the volume of a sphere, a cylinder and other figures.
2007-01-01 20:30:09 · answer #1 · answered by Puzzling 7 · 1⤊ 0⤋
pi is an irrational number. it is the ratio of the circumference of a circle to its radius. in plane geometry, it is important in problems related of circles as well as circular surfaces, whereas in solid geometry, it is used in determining the surface areas of curved surfaces and circular plane surfaces and volumes of cones, cylinders, spheres etc... 22/7 is only an approximate value of pi.
2007-01-01 20:31:54 · answer #2 · answered by Anonymous · 0⤊ 0⤋
Well I've never been on a plane. I probably wouldn't try to talk to the passenger and that's mainly because I'm not great at talking to people and I wouldn't class myself as being social as I'm more of a private person.
2016-05-23 05:35:41 · answer #3 · answered by ? 4 · 0⤊ 0⤋
it is the ratio of a circles perimeter to its diameter. 3.1416
It is a constant that is often used in formulas
2007-01-01 20:29:26 · answer #4 · answered by 2cute4u 2 · 0⤊ 0⤋