Lucy decides to paint only the walls of 3 bedrooms in her house. Each room has a door, a closet door, and a window. She is only applying 1 coat of paint to the walls. Each room is 14 feet by 12 feet with 8-foot ceilings. Each door has dimensions 6.5 feet by 2.5 feet. Each window has dimensions 4.5 feet by 3 feet. 1 gallon of paint with cover 350 square feet. Paint is sold in 1-gallon containers. Enter the minimum number of 1-gallon cans of paint she need.

The minimum number of 1-gallon cans of paint Lucy needs is 5.

Step-by-step explanation:

Given in the question,

There are 3 bedrooms of dimensions (14*12*8)feets

Thus total area of the room = area of walls+area of 1 ceiling

= (2*area of opposite walls)+(2*area of another set of opposite walls)+ceiling

=(2*14*8)+(2*12*8)+(14*12)

=224+192+168

=584 square feet.

Now deducting the area of doors and windows of area (6.5*2.5)sq ft and (4.5*3)sq ft;

=584-(6.5*2.5)-(4.5*3)

=584-16.25-13.5

=554.25 sq ft.

There are 3 such of bedrooms.Thus;

=3*554.25

=1662.75 sq ft.

Now dividing it with 350 sq ft which is the capaciy paint for 1-gallon container;

=1662.75/350

=4.7507.

which is nearly equals to 5. Thus,the minimum number of 1-gallon cans of paint Lucy needs is 5.

answer: the answer is (b) amie should have multiplied

step-by-step explanation: given a sphere and a cylinder with same radius and height.

let, 'r' be the radius of the cylinder and sphere and 'h' be the height of the cylinder. according to the question,

r = h.

now, the volume of the sphere will be

and the volume of the cylinder will be

therefore, we have

thus, ammie should have multiplied the volume of the sphere