which of the sentences are true? 77.28 is less than 77.25, 32.641 is greater than 32.645, 67.492 is greater than 67.692, or 91.631 is less than 91.681?​

1- true

2- false

3- false

4- true

91.631 is less than 91.681

Step-by-step explanation:

approximately:

91.631= 91.6

91.681= 91.7

80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

hope this !

if a = 1,   and b = 2, then the answer is 47.99999999. if you round that to the nearest whole number, the answer is 48.