math Bharti Bhavan(class-9th) heron's formula & its Application,Ex-13A, भाग 2.question No-2(i to vi)
education Math Adda Praveen sir Education Math Adda Praveen sir heron's formula &its Application Ex-13A question No-2. i. ii. iii. iv. v. vi bharti bhavan Math class 9th भारती भवन वर्ग 9th हीरोन का सूत्र और इसका प्रयोग