Question

Help please

Answer 1

@mathmate

Answer 2

the total distance around is 70

suppose the angle was 90° thenyou can see that 90/360 = 1/4 of a circle

so the arc would be 1/4 of circumference = 70/4

In YOUR case the angle is 72 so find out the fraction of the cirrcle (360°) made by 72°

then multiply circumference by that fraction

Answer 3

@MrNood 's answer, in a picture

So what is alpha?

Answer 4

@zarkam21

so what is the fraction of a circle that is made by the arc of 72°

Answer 5

1/4

Answer 6

@zarkam21
No - illustrated that 90/360 = 1/4

so what fraction is 72° ?

Answer 7

You can see that 60° goes into a circle SIX times

Howm many times will 72° go ?