Question

find the volume of this cylinder. give your answer to 1 decimal place. Base is 9cm. Length is 20cm. ​

Answer 1

Answer:

1272.5cm^3.

Step-by-step explanation:

radius(r) = 1/2 of base length

= 1/2 × 9 = 4.5cm.

length/height of the cylinder(h) = 20cm.

Volume of the cylinder = πr2h

= 3.142 × 4.5^2 × 20

= 3.142 × 20.25 × 20

= 1272.5cm^3.

Answer 2

The volume of the cylinder given that it has a base of 9 cm and length of 20 cm is 1271.7 cm³

Volume of Cylinder

v = πr²h

Where

• v is the volume
• r is the radius
• h is the height

How to determine the radius

• Base (diameter) = 9 cm
• Radius (r) = ?

Radius = diameter / 2

r = 9 / 2

r = 4.5 cm

How to determine the volume of Cylinder

• Height (h) = 20 cm
• Radius (r) = 4.5 cm
• Pi (π) = 3.14
• volume (v) = ?

v = πr²h

v = 3.14 × (4.5)² × 20

v = 1271.7 cm³

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