A student measures that a piece of string is 2.6 cm, but the actual length of the string is 2.9 cm. What is the student's percent error?
А A
19.7%
B
20.6%
38.5%
D
10.3%
I don't know
m

256π units²   (answer b)

step-by-step explanation:

the formula for the surface area of a sphere of radius r

is             a = 4πr²

and so, if r = 8 units, then the surface area is:

a = 4π(8 units)² = 256π units²   (answer b)

i believe the answer is letter c) 8

step-by-step explanation:

x = 12

y = 1

for the points!