Answer:
3. 45, 4. 24
Explanation:
use formula: hypotenuse²= side² + other side ²
3.
x²= 27²+36² calculate the squares then add
x²=2025 square root both sides
x= √2025= 45
4.
25²= x²+7² isolate the vaiable by subtracting 7² from both sides
25²-7² = x² square then subtract
576 =x² square root both sides
24=x