Question

:
5
The area of A ABC is 8 cm² in which AB = AC = 4 cm and ZA = 90%.​

Answer 1

Step-by-step explanation:

let BC = x

area 8cm²

it is scalene triangle

so, √s(s-a)(s-b)(s-c)

s =semi perimeter

4 + 90% of x + x =8

90 × 2x/100 =8-4

9 × x/5 =4

x =4×5/9

x =20/9

x =~2.22