Civil Service Exam Reviewer · Measurement and Geometry · medium
What is the area of a circle with a radius of 5 m? (Use π = 3.14)
- 31.4 m²
- 78.5 m²
- 314 m²
- 15.7 m²
Answer
B. 78.5 m²
Solution
A = πr² = 3.14 × 5² = 78.5 m².
More Measurement and Geometry questions
- A rectangular lot 40 m by 19 m is to be fenced at ₱170 per meter. How much will the fence cost?
- How many 40 cm × 40 cm square tiles are needed to cover a floor 10.8 m by 2.4 m?
- Convert 41 °F to degrees Celsius.
- Convert 38 miles to km. (1 mil = 1.609 km)
- The legs of a right triangle measure 24 cm and 45 cm. How long is the hypotenuse?
- What is the volume of a box 17 cm long, 12 cm wide and 7 cm high?
- A trapezoid has parallel sides of 28 m and 44 m and a height of 16 m. What is its area?
- What is the area of a circle with a radius of 26 m? (Use π = 3.14)
- A rectangular lot 48 m by 20 m is to be fenced at ₱280 per meter. How much will the fence cost?
- How many 30 cm × 30 cm square tiles are needed to cover a floor 5.4 m by 0.9 m?