Rewrite the equation
c
=
2
πr
to show the expression that can be used to fine the value of r.

r=C/2π

Step-by-step explanation:

here we just have to rearrange the given formulae in such a way that it finds out the value of r.

Given formulae is C=2πr

we can carry 2π to the left hand side.

r= . is the recquired formulae.

i got 86 for this

hope this !

if you need an explanation just ask

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.