Question

What is the length of a 45 arc

Answer 1

Answer:

1.5707

Step-by-step explanation:

i solved it using the furmola :

$2\pi \times r \frac{45}{360}$

Answer 2

Answer:

a = 1.57 in

Step-by-step explanation:

We know that the length of the arc in a circle is proportional to its corresponding angle which means:

a corresponds to 45

2πr corresponds to 360

then

$\frac{a}{45} = \frac{2\pi r}{360}$

then

a = (45÷360)×4×π

 =1.570796326795