🎯Lock in $19.99 pricing before September 1, 2026· Save $10 on every full-credit subject through August. Pricing returns to $29.99 on Sept 1.· Ends Aug 31, 2026
A tree casts a shadow 18 feet long. At the same time, a 5-foot-tall fence post casts a shadow 3 feet long. How tall is the tree?
A24 feet
B30 feet
C27 feet
D36 feet
Explanation
The tree and fence post form similar triangles with their shadows (same sun angle). tree height / tree shadow = fence height / fence shadow h / 18 = 5 / 3 h = 18 × 5/3 = 30 feet.
Ready to start practicing?
Free sample questions available. No credit card required.