16^(-½) is the same as 1/(16^(½)) which is equal to ¼
The perimeter is 41.7
Find the length of each side using the distance formula:

Adding the side lengths, we have
14+7.8+19.9=41.7
Answer:
30
Step-by-step explanation:
let EFH = x
Let GFH = y
x + y = 90
x = 2y
Substitute: 2y + y = 90
3y = 90
y = 30