Question

hi guys please help me to solve this

Answer 1

let the third side be x

24+ x =30

x=6

Area = under root s(s-a)(s-b)(s-c)

s= semiperimeter=30/2= 15 cm

Area= under root15(15-12)(15-12)(15-6)

=under root 15×3×3×9

9root15 cm^2