Question

A cylinder has diameter 20 cm and height 9 cm.
Work out surface area and volume of the cylinder?​

Answer 1

Answer:

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Answer 2

Given :-

A cylinder has diameter 20 cm and height 9 cm.

To Find :-

SA

Volume

Solution :-

Radius = Diameter/2

Radius = 20/2

Radius =  10 cm

Now

Volume = πr²h

Volume = 314/100 × (10)² × 9

Volume = 314/100 × 100 × 9

Volume = 314 × 9

Volume = 2826 cm³

TSA = 2πr(r + h)

TSA = 2 × π × 10(10 + 9)

TSA = 2 × 314/100 × 10(19)

TSA = 2 × 314/10 × 19

TSA = 1193.2 cm³