Around which line would the following cross-section need to be revolved to create a sphere?

circle on a coordinate plane with center at 1 on the y-axis and a radius of 1

x–axis
y=x
x = 1
y = 1

english, cause i can’t you

answer: 7 x 2/5 = 2.8 hours, is your answer. your welcome! : 3

step-by-step explanation: first work out how long it took to hose 1/7 of the lawn which is 2/5 hours. times that by 7 to get the whole lawn.

sorry i don't know the other answer. i didn't learn what a proportional relationship is.