Answer:
4.8
Explanation:
We have assume a right triangle to be formed from the given description so for the altitude we can use the Pythagoras theorem.
a²+b²=c² (where a and b are the side lengths and c is the hypotenuse)
Putting the values that we have.
11²+b²=12²
simplify this,
121+b²=144
subtract 121 from both sides
b²=23
To solve for the missing side/altitude we just need to find the square root of 23
b=√23
It is approximately 4.8
