Answer:

Here ba?

This is my answer :))

Copy it nalang...

Step-by-step explanation:

So kapag Ikaw ay mag solve dapat i-follow mo ang process.

Sa diameter ganito:

Given: d=20 in.

C= π × d

C= 3.14 × 20 in.

(This symbol π is always 3.14)

(Times 3.14 to 20 in.)

C= 62.8 in.

(This is your answer.)

Sa radius ganito:

Given: r= 4 cm

C= πd / 2πr

(Yan ang kanyang formula.)

C= 2(3.14)(4 cm)

(Hindi mo pwede ipalit ang 2 for it is already given.)

(3.14 × 2 = 6.28) (6.28 × 4 = 25.12)

C= 25.12 cm

(This is your answer.)

Hope this helps you :))

Tag-lish hehe :'))