Multiple choice

Steel is used to make a hemispherical bowl that is 0.37 cm thick. The bowl's inner radius is 6 cm. Find the bowl's outside covered surface area (take π =22/7).

  1. 532 cm²

  2. 255.0548 cm²

  3. 484 cm²

  4. 523.4107 cm²

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Outer radius R = 6 + 0.37 = 6.37 cm. Outer surface area = 2πR² = 2 * (22/7) * (6.37)² = 255.0548 cm² (approximately).