Question

i was using during the finding area of circle that is 22/7*28 square=22/7*784 then we get different answer than if we use 3.14*784.what's the logic behind it.can anyone tell me ...

Answer 1

radius =28 right ?

Answer 2

@ziqbal103

Answer 3

yes

Answer 4

2464(area) when 22/7 =pi
2461.76(area) when pi =3.14
right ?

Answer 5

22/7=3.142857

Answer 6

pi=3.14

Answer 7

https://www.google.co.in/#q=22%2F7

Answer 8

answer is different because value of pi inputted is different.

Answer 9

@ziqbal103
is it clear now ?

Answer 10

yes when we use 22/7 then we get answer 2646, but when we use 3.14 *28square then we don't get the same answer

Answer 11

but what answer should we prefer in some questions of oxford book they are using the value of pi 22/7 and in some questions 3.14.

Answer 12

very good.

Answer 13

if the value of pi is given as take pi=3.14
then use pi=3.14 in your answer
if the value of pi is given as take pi=22/7
then use pi=22/7 in your answer

Answer 14

it it it said round your answer to 2 decimal digits then take pi=3.14

Answer 15

http://hotmath.com/help/gt/genericprealg/section_9_3.html

Answer 16

go through the above useful link to understand better.thank you.

Answer 17

thank you very muuch

Answer 18

wc.