Question

I need help on #10, thanks :D

Answer 1

i need help on # 10

Answer 2

The rule for circumference is C=pi*D where D is diameter. Just sub in the value and you'll get the right answer.

Answer 3

c=PI (r^2) since r = d/2 then r^2=d^2/4

c=(3.14)(100/4)

Answer 4

so 31.4?

Answer 5

or 15.7?

Answer 6

every computer has calculators...

Answer 7

yea i know, so would it be 31.4? or 15.7?

Answer 8

For Circumference the rule is C=pi*D, for Area it is A=pi*(r)^2.

C=3.14*10
=31.4

Answer 9

so it is 31.4? thought so,
thank you :D