The area of circle Z is 641 ft.
What is the value of r?
O
O
O
O
r= 4 ft
r= 8 ft
r= 16 ft
r= 32 ft
Area

I think  the radius would be 14.28ft

Step-by-step explanation:

Area of circle is pi r^2

Area of circle=641ft

so that means you have to divide 641/3.14 because the point of the question is finding the radius.

so 641/3.14=204.140127

then for the final step finding the square root which is about 14.28ft

that means the radius is 14.28ft.

part d

step-by-step explanation:

theresa talked her parents into getting sd cards for her phone and her brother’s phone. inserting an sd card into a phone gives it more storage. they both get 8-gigabyte sd cards. how many bits of storage come with each sd card? type your answer in both scientific and standard notation.