a right triangle with side 3 cm 4 cm and 5 cm is rotated to form a cone of height 3 cm find the curve surface area of cone so generated​

Answers 1

Answer:

Solution (By Examveda Team) Clearly, We have r = 3 cm and h = 4 cm ∴ Volume = 1 3 π r 2 h = ( 1 3 × π × 3 2 × 4) c m 3 = 12 π c m 3. Noumaan Malik : 2 years ago. They have said that to rotate around 3 cm side. That means to make a cone we have to make a round circle around 3 cm line. Seema : 5 years ago. How do we know that 3 will be Option A

A. 12π

cm3

B. 15π

cm3

C. 16π

cm3

D. 20π

cm3

Answer: Option A

Step-by-step explanation:

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