Civil Service Exam Reviewer · Measurement and Geometry · hard
A 50-m ladder leans against a wall with its foot 14 m from the wall. How high up the wall does it reach?
- 48 m
- 36 m
- 51.92 m
- 49 m
Answer
A. 48 m
Solution
h = √(50² − 14²) = √2304 = 48 m.
More Measurement and Geometry questions
- If the radius is multiplied by 3, by what factor does the volume of a sphere increase?
- How many diagonals does a polygon with 16 sides have?
- A garden 21 m by 10 m is surrounded by a walkway 2 m wide. What is the area of the walkway?
- What is the volume of a sphere with a radius of 12 cm? (π = 3.14)
- What is the volume of a cone with a radius of 6 cm and a height of 9 cm? (π = 3.14)
- A cylindrical water tank has a radius of 70 cm and a height of 180 cm. How many liters can it hold? (π = 3.14, 1 L = 1000 cm³)
- A window is shaped like a 15 dm × 9 dm rectangle topped by a semicircle whose diameter is the 9-dm side. What is the window's total area?…
- A runner moves at 28 m/s. How far in kilometers does she travel in 10 minutes?
- An open-top box (no lid) is 25 cm long, 25 cm wide and 12 cm high. What is the area of material used?
- A solid metal cube with 20-cm edges is dropped into a rectangular aquarium 59 cm long and 25 cm wide, fully submerging it. By how much…