If the radius of a cylinder is 3 centimeters, then will the area of one of the circular bases is 18.84 square centimeters

NO, the area of the circular base will not be 18.84 cm square.

Step-by-step explanation:

Given is that the radius of the cylinder is = 3 cm

We will calculate the area of the circular base.

The area of the circular base is given as :

Putting values in the formula we get:

cm square

So, The answer is - NO, the area of the circular base will not be 18.84 cm square.

b.an increase in a causes b to decrease

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations: