Question

In ABC , AB = AC = 17cm and BC = 30cm find area of ABC ( by herons formula )​

Answer 1

Step-by-step explanation:

Answer:

√8= 2√2

√12= 2√3

(A+B)(A-B)= A^2 - B^2

(√2+1)×(√(3+√2))×(√8–2)×(√12+√8)

= (√2+1)×(√(3+√2))×(2√2–2)×(2√3+2√2)

= (√2+1)×(√(3+√2))×2(√2–1)×2(√3+√2)

= 4(2–1)×(√(3+√2))×(√3+√2)

= 4(√(3+√2))×(√3+√2)