Multiple choice

The base radius of a right circular cone is 6 cm and its slant height is 28 cm. The curved surface of the cone is __________.

  1. 268 sq. cm

  2. 458 sq. cm

  3. 462 sq. cm

  4. 528 sq. cm

  5. 624 sq. cm
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The curved surface area of a cone is given by the formula pi * r * l, where r is the radius and l is the slant height. Using pi = 22/7, the area is (22/7) * 6 * 28 = 22 * 6 * 4 = 528 sq. cm.

AI explanation

The formula for the curved surface area of a cone is pi times radius times slant height. Using the values gives pi times 6 times 28. Taking pi as 22 divided by 7, the product of 22 divided by 7, 6 and 28 is 528. The result is 528 sq. cm.

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