Question

7. Find the area of the triangle whose sides have lengths 15, 15,12cm.

Answer 1

Answer: 82.4863

Step-by-step explanation:

Answer 2

Step-by-step explanation:soln;

let, a=15 b=15 c=12then,

S=a+b+c/2

=15+15+12/2

=42/2

=21

ATQ,

Area of ∆=root under √s(s-a) (s-b)(s-c) =√2(21-15) (21-15) (21-12)

=√2×6×6×9

=√648

=25.45cm^2