Answer:
The receiver placed at the focus is 56.43 from the bottom of the dish
Explanation:
Let the receiver be R
The satellite dish is 56 and at the focus is 28
49 is the depht
We can get R using the Pitagoras Theorem
a² + b² = R²
28² + 49² = R²
Do calculations
784 + 2401= R²
3185 = R²
R= √3185
R= 56.4358