Math, asked by rishiojha39, 10 months ago

5. The curved surface area of a cylindrical pillar
is 528 m^2? and its volume is 2772 m^3. Find the
diameter and the height of the pillar.​

Answers

Answered by 10230
2

Answer:

Step-by-step explanation:

curved surface area =528 m²

   2πr h =528 m²            [let r,h=radius and height of cylinder]

      π r h=528/2

⇒  πr h=264 ⇒A

  also, volume of cylinder=2772 m³

⇒          π r² h=2772

⇒          (π r h) r=2772

⇒           (264) r= 2772  

⇒             r=2772/264

⇒             r=10.5 m

  using  A

⇒  πr h =264

 ⇒  22/7 ×10.5×h=264

  ⇒     231/7×h=264

⇒            231×h=1848

⇒                h=1848/231

⇒           h=8 m

 as, radius=  10.5 m

so, diameter= 2(radius)

⇒   diameter=2(10.5)

⇒    diameter= 21 m        

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