Question

Please help me i have maths exam​​

Answer 1

Step-by-step explanation:

by herons formula = √ s×(s-a)×(s-b)×(s-c)

s=a+b+c/2

s=11+16+8/2 = 17.5

√17.5 ×(17.5 - 11)×(17.5 - 16)×(17.5 - 8).

now it will be easy.