Cheatography

Unit 1: Measurement Cheat Sheet (DRAFT) by Tana

All formulas of measurement in fbise kpk tb board

This is a draft cheat sheet. It is a work in progress and is not finished yet.

 Number of radian­s=arc length­/radius of same circle q= S/r If one revolution is 360°, radians will be circum­fer­enc­e/r­adius. This will give us 2πr/r and therefore 2πrad=360 and finally, 1 rad=57.3° (after dividing) This also proves that 1rad in one revolu­tion=2π

 Number of steradians in sphere= area of sphere/r2. Thus, steradians in sphere=4π

Uncert­ainties

 Sum and Difference The normal values always follow the given operation however, the uncert­ainties ALWAYS get added Product and Quotient The normal values always follow the given operation however, the uncert­ainties are first converted into %, added and finally converted back (only if needed) Power The normal value gets solved as normal however, the uncert­ainty is converted into %, multiplied to the given power and finally converted back (only if needed)

Signif­icant Figures

 Addition and Subtra­ction Krd Multip­lic­ation and Division Oks