The inner and outer radius of a circular track are 23 m and 29 m respectively The cost of leveling t...........

Quantitative Aptitude (CGL) Geometry

The inner and outer radius of a circular track are 23 m and 29 m respectively. The cost of leveling the track at Rs 7/m² is

This questions was previously asked in

SSC CGL 7th March 2020 Shift-3

Rs 7,215

Rs 3,284

Rs 6,864

Rs 5,300

- The inner and outer radius of the track are given as 23 m and 29 m.

- First, we calculate the area of the annular track:

- Area = p(outer radius² - inner radius²)

- Area = p(29² - 23²) = p(841 - 529) = p(312) ˜ 980.32 m²

- The cost of leveling is Rs 7 per m².

- Total cost = 980.32 m² × Rs 7/m² ˜ Rs 6,862.24

The options are:

1. Rs 7,215

2. Rs 3,284

3. Rs 6,864

4. Rs 5,300

- Correct Answer: Option 3, Rs 6,864, as it is closest to Rs 6,862.24.

Submit Error