Question

how to calculate the circumference of a circle with a radius 30in, in terms of pi? I think it is 60. Am i right?

Answer 1

60 pi

Answer 2

thankyou. Can you help me with another?

Answer 3

35. What is the area of the figure to the nearest tenth?
8.6 in.2
51.8 in.2
103.6 in.2
16.5 in.2

Answer 4

the area of a circle is pi r^2
here we have r = 6 and we have 165/360 of a circle
so what do you think the formula for the area is?

Answer 5

isnt it something like 3.14*r^2?

Answer 6

im thinking it is 51.8