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Question : What is the difference between the total surface area and the curved surface area of a cone whose radius is 35 cm? (Take $\pi=\frac{22}{7}$)

Option 1: 3850 cm2

Option 2: 3704 cm2

Option 3: 3750 cm2

Option 4: 3675 cm2


Team Careers360 7th Jan, 2024
Answer (1)
Team Careers360 16th Jan, 2024

Correct Answer: 3850 cm 2


Solution : Given: Radius of the cone ($r$) = 35 cm
Let the slant height be $l$ cm.
Curved surface area = $\pi r l$
Total surface area = $\pi r (l+r)$
Now, Total surface area – curved surface area
= $\pi r (l+r)-\pi r l$
= $\pi r^2$
= $\frac{22}{7}\times35\times35$
= 3850 cm 2
Hence, the correct answer is 3850 cm 2 .

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