Find the total surface area of a cylinder with diameter of base 28 cm and height 70 cm ........

Quantitative Aptitude (CHSL) Mensuration 2D

Find the total surface area of a cylinder with diameter of base 28 cm and height 70 cm.

This questions was previously asked in

SSC CHSL 9th June 2022 Shift-2

7300 cm²

7932 cm²

8000 cm²

7392 cm²

To find the total surface area of a cylinder:

- Formula: Total Surface Area = 2pr(r + h)

- Given:

- Diameter = 28 cm, so Radius (r) = 14 cm

- Height (h) = 70 cm

- Calculation:

- Total Surface Area = 2p(14)(14 + 70) = 2p(14)(84)

- Solve:

- First, calculate 2 × 14 × 84 = 2,352

- Then, multiply 2,352 by p (use 3.14 as an approximation)

- Result:

- ˜ 7,392 cm²

- Options:

- Option 1: 7300 cm²

- Option 2: 7932 cm²

- Option 3: 8000 cm²

- Option 4: 7392 cm²

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