Hard Math Class 9 Level 3

The curved surface area of a cone is 792 cm² and radius is 14 cm. What is its slant height?

शंकु का वक्र पृष्ठीय क्षेत्रफल 792 cm² और त्रिज्या 14 cm है। तिर्यक ऊंचाई कितनी होगी?

Show answer and explanation

Correct Answer

C. 18 cm / 18 cm

Explanation

Using πrl = 792 with r = 14 gives 44l = 792 so l = 18 cm.

πrl = 792 में r = 14 रखने पर 44l = 792 इसलिए l = 18 cm।

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