Question

Please help meeeee

I need correct asnwers

Answer 1

diameter = 12 cm

radius = 6cm

circumference = 12
`\pi` cm ≈ 37.68 cm

area = 36
`\pi` cm² ≈ 113.04 cm²

Explanation:

r = radius

d = diameter

C = circumference

A = area

The diagram shows a circle with a diameter of 12 cm

Diameter

d = 12 cm

Radius

r = d/2

⇒ r = 12/2

⇒ r = 6 cm

Circumference

C =
`\pi`d

⇒ C = 12
`\pi` cm

Area

A =
`\pi`r²

⇒ A =
`\pi` x 6²

⇒ A = 36
`\pi` cm²

If you use
`\pi` = 3.14 then:

C = 37.68 cm

A = 113.04 cm²