Heron's formula class 9 with example|| #icse #cbse #physicswallah

heron's formula for class 9 | competitive exam | CBSE exams | if you want detailed video comment below | Ncert question

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[muskann]

So here's a explanation who wanna understand herons formula question no 1
Hame herons formula wale chapter mai bs ek formula yd rkhna hai pure chapter mai yehi lagega formula hai root s (s-a)(s-b)(s-c) agr hame kbhi bhi equaliteral triangle diya gya ho tu yad rkhna ki equilateral triangle ki 3 sides equal hoti hai question ke hisaab se hame ek side di hai a toh teeno side a ho jayegi hame ek or formula lagana hai a+b+c/(upon) 2 toh ham
a+a+a=3a ajayega kyunki 3 a hai fir isse divide Krna hai perimeter diya Gaya ho toh phele perimeter se Krna pdta hai divide isme 180 diya gya hai toh 180/3 =60 hame side ek pata chl gyi toh ham 60+60+60= 180 iska equal krkr jadtaar answer perimeter aata hai pr yeh kbhi kbhi hi hota hai
180/2 =90
Isee herons formula ke hisab se arrange krdenge
√s ki jagah 90 (90-60)(90-60) (90-60)
Abh hame yeh no jinse bhi divisible hai wo dekhana hai
90 ko ham 30×3 likh sakte hai uske bad jo upr given value unka minus krne pr 30 30 30 ayega jisko apn easy krne ke liye 30×1 30×1 30×1 likh skte hai ab inke do do ke pair bnenge 30 =4 baar hai toh yeh sirf do bar likhynge kyunki inka pair bngya hai 2 2 ka 1 =3 bar hai toh 2 ka hi pair bnega aur apn ko 30×30 ko multiply Krna hai jo ayega 9000 aur jinka pair nhi bna unka bhi multiply Krna hai 3×1=3 jiska pair nhi bna wo root mai likhyega aur answer kch iss parkar ka ayega 9000√3 answer
Hope this helps you ❤
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[JontyThakur-cw]

Ye galat he question me kuch or pucha he or in ka answer kuch or aa raha he