Question

I would really appreciate if someone could help and explain as well not just give me the answer

Answer 1

1330cm³ (rounded to 3 s.f.)

Explanation:

The formula of finding the volume of a cylinder is:
`\pi` × r² × h

r is the radius of the cylinder, which is also half of the diameter.

You know the diameter is 11cm and the height (h) is 14cm.

Volume of cylinder =
`\pi` × (11÷2)² × 14

=
`\pi` × 5.5² × 14

=
`\pi` × 30.25 × 14

= 423.5
`\pi`

= 1330cm³ (rounded to 3 s.f.)

Answer 2

1330.5 cm³

Explanation:

To find the volume you want to find the area of the circle and then times this by 14 which is the length of the shape

Area of circle = πr²

11 = the diameter so 5.5 = radius

5.5² x π = 121/4 π

times this by 14 to get 1330.464489 cm³

to 1dp = 1330.5 cm³