Multiple choice

The CSA of a right circular cone of radius 11.3 cm is 355cm².what is it's slant height

  1. 8cm

  2. 9cm

  3. 10cm

  4. 11cm
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C Correct answer
Explanation

The curved surface area (CSA) of a cone is given by pi * r * l. Given CSA = 355 and r = 11.3, we have 355 = 3.14159 * 11.3 * l. Solving for l gives l = 355 / (3.14159 * 11.3) which is approximately 10.

AI explanation

The formula for the curved surface area of a right circular cone is pi times radius times slant height. Substituting the given values gives 355 = 22 divided by 7 times 11.3 times slant height, which simplifies to 355 = 35.5 times l. Solving for l gives a slant height of 10 cm.

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