Answer:
a = 
Step-by-step explanation:
Using Pythagoras' identity in the right triangle.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
a² + 9² = 12²
a² + 81 = 144 ( subtract 81 from both sides )
a² = 63 ( take square root of both sides )
a = 
Answer:
39?
Step-by-step explanation:
Because the distance between U and Y is 39.
(I'm sorry if I was wrong)
The perimeter is 47cm. The area would be 111cm^2. Hope this helped, could I possibly get brainliest?
Answer:
a = 1, b = 2, c = 3
Step-by-step explanation:
