Answer:
22.6 metres to 1 decimal place
Step-by-step explanation:
This question requires Pythagoras. The length is the a value and the distance from the top of the building to the tip of the shadow is the c value so,
28² + b² = 36²
→ Simplify
784 + b² = 1296
→ Minus 784 from both sides to isolate b²
b² = 512
→ Square root both sides to isolate b
b = 22.627416998
