Question

If the height of right circular cylinder is equal to the diameter of the base,then it's whole surface area is equal to

Answer 1

Answer:

6 π r² square unit

Step-by-step explanation:

Given---> Height of right circular cylinder is equal to the diameter of the base

To find---> Total surface area of cylinder.

Solution---> Let radius and height of cylinder be r and h respectively.

Radius of cylinder = r

Diameter of cylinder = 2 × radius of cylinder

= 2 r

Height of cylinder = h

ATQ,

Height of cylinder = Diameter of cylinder

=> h = 2 r

Total surface area = 2 π r ( r + h )

Putting h = 2r in it , we get,

= 2 π r ( r + 2r )

= 2 π r ( 3r )

Total surface area = 6 π r² square unit

#Answerwithquality

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